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A soccer coach wants to know how many hours a week his players spend training at home. He has 20 players and he decides to ask the first 4 players to arrive at Monday's soccer practice how many hours they spend training per week. He then calculated that they spend an average of 10 hour per week. Therefore, he assumed that all the players train 10 hours per week. Is this an example of a simple random sample? 

A No, because each student did not have an equal chance of being selected. 

B Yes, because each student had an equal chance of being selected. 

C No, because he did not sample every soccer player. 

D Yes, the minimum number of students sampled need to be four for it to be a simple random sample. 

The figure shows the graph of f. 

(b) Which of the cx-values A, B, C, D, E, F and G appear to be inflection points of f? 

The diagram shows two rectangles, A and B. 

All measurements are in centimetres. 

The area of rectangle A is equal to the area of rectangle B. 

Find an expression for y in terms of w. 

George's page contains twice as many typed words as Bill's page and Bill's page contains 50 fewer words than Charlie's page. If each person can type 60 words per minute, after one minute, the difference between twice the number of words on Bill's page and the number of words on Charlie's page is 210. How many words did Bill's page contain initially?

 Bill's page initially contained        words. 

Simplify 2sin(5x)cos(3x) - sin(2x) to one an expression containing one trigonometric function. Then graph the original function and your simplified version to verify they are identical. Enclose arguments of functions in parentheses. For example, sin(2x). 

2sin(5x)cos(3x)-sin(2x)=

A health psychologist was interested in the effects of vitamin supplements on the immune system. Three groups of adults were exposed (in a highly ethical way) to the cold virus; one group took no supplements for a week before exposure, another had vitamin C supplements, and a third had multivitamins (excluding C). The severity of the cold was measured as a percentage (0% = not contracted, 100% very severe symptoms). The psychologist also measured the number of cigarettes that each person smoked per day, as smoking suppresses the immune system. The psychologist was interested in the differences in the severity of the illnesses across different vitamin groups accounting for cigarette usage. What technique should be used to analyse these data? 

A. Two-way repeated-measures ANOVA 

B. Two-way independent ANOVA 

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Trigonometry is a field of mathematics that studies the connection between various triangular angles and other angles. It investigates the connections between different angles as well as their uses. The most common terminologies in trigonometry include cosecant (cosec), secant (sec), cotangent (cot), tangent (tan), cosine (cos), and sine (sin). Learning such unfamiliar terms and the need to calculate more triangles and double angles than you had anticipated may make it challenging to understand trigonometry fully. Our math experts strive to assist with thorough explanations since they know math’s importance and difficulty. Therefore, don’t worry, no matter what assignment problems appear on your worksheets for trigonometry. Our online trigonometry homework help will increase your likelihood of better academic performance, particularly in this area of mathematics.

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Using MoSCoW in Agile to Prioritize Better

One of the key ideas in Agile is prioritization – a team needs to understand which features must be done and which can be left behind in order to produce the best result. However, the concept can be quite difficult to grasp when moving from a different project management approach. A prioritization technique called MoSCoW brings great help and clarity in such cases.

First used with Dynamic Systems Development Method, MoSCoW is a technique developed by Dai Clegg . The sole purpose of this prioritization approach is to help understand the importance that the stakeholders put on each of the features and requirements they pose. Thus being able to focus on the exact most important ones first and tacking on the rest only if the team has time left.

The technique requires to divide all of the features into four categories – Must, Should, Could and Won’t. Thus forming the MSCW acronym from which the name MoSCoW appears. In order to know which of the features are crucial, the team has to categorize them into the four groups.

Must have features are absolutely crucial to the project. Should have features are important to the project, but less urgent. Could have features are not as important as they are desirable and should only be completed if there is left over time. And lastly Won’t have features are either not important or not possible at the time and thus are not completed at all.

Once the team prioritizes the features, they create a clear action plan to move forward. First, they have to complete all of the Must have features. Once that is done they can move onto the Should haves. And only after all of the Should haves are done, the team can consider the Could haves. This way the focus is on the most important tasks right away.

What does this have to do with Agile ? It will help teams transition, prioritize and plan better.

Running a first Sprint or a first iteration can and most likely will be tough on any team. You don’t know what you are doing, you are still questioning the process and on top of that now you have to decide with which of the many tasks you will start first. Adding the MoSCoW technique in such cases will bring the team clarity and provide the ability to move forward.

Depending on the process, the team could even divide the backlog into 4 columns based on the four importance groups. This way being able to add the new features straight into the appropriate columns and compare them against each other to get a better sense of their priorities.

While more advanced teams will often see no point of such prioritization and be content with the traditional story point or priority column approach, this can be a great help for new Agile practitioners.

One thing to note though, is that while the MoSCoW technique is usually used only once or a couple of times during the project, for Agile teams this will be different. To accommodate the changing circumstances and planning the right work for each iteration, the technique should be used whenever the priorities switch. Since that could become quite burdensome, the teams should make a note of reviewing their priority columns every time they plan a new iteration.

Would you consider MoSCoW as part of your Agile routine?

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• Tour Account ›
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Independent Travel to Moscow and St. Petersburg

My wife and I have traveled independently to many European countries and, after reading many of the comments in this forum, feel like we may be able to do so in Moscow and St. Petersburg as well, although we feel somewhat less comfortable than the other countries where we have traveled in Europe.

My biggest question is how much we will miss by visiting the main sites without a tour guide. In the other European countries we have visited on our own we have been comfortable and satisfied with the level of knowledge we have gained by studying and visiting on our own, although we believe a tour guide or tour company in any country would normally be able to provide greater insight than visiting a site on our own, but about in Moscow and St. Petersburg?

Any thoughts would be appreciated.

Unless you speak at least some Russian and read the alphabet it would be difficult without a guide. Very few signs in English especially in Moscow. Also not too many people speak English there.

I visited St Petersburg last Autumn for a protracted period , and did not find it anymore daunting than any other European city . As Ilja says , learning the Cyrillic alphabet is a big plus . I also found that it was fairly easy to grasp . It will , among other things , enable you to read signs with relative ease . I would answer the main part or your question ( about tour guides ) thus - I am not enamored of tour guides or tours. While I only use a tour under duress ( A sites rules prohibiting an independent visit - ie Glasgow School of Art , Municipal House in Prague , etc ) . Doing your own preparation and homework is the best way , in my opinion . My wife and I ventured through St Petersburg with nary a concern ,and made two day trips outside of the central district ( one was twenty five miles away , and no English speakers in sight ) Figuring out the logistical details , did not present any difficulties . While I never use tours , I am an inveterate eavesdropper , have done so many times , and find , that on balance , the information that they impart is fairly elementary . If you want greater detail , they are unlikely to supply it . I also prefer to go at my own pace , not being rushed and being able to dwell on things that most other visitors barely give a passing glance . If you are interested , let me know . I would be happy to provide you with information that will enable you to travel independently

Thank you, Steven. I am encouraged by your comments and feel the same way you do about tour groups. We are very much willing to prepare in advance and learn the basics of the Cyrillic alphabet to help us have a better experience.

I would be very interested in learning more about your experience in Russia and receiving any additional information you can provide on independent travel there, starting perhaps with obtaining the visa.

I am not opposed to hiring a private or small group guide for a specific site or for a day trip outside St Petersburg and Moscow, but, like you said, I much prefer the freedom of staying at places as long or short as I want and seeing the sites that interest me most. For example, neither my wife nor I are big into shopping, yet most tour itineraries leave afternoon time for just that. Not interested!

Please provide whatever you may feel would be helpful for us.

Russ , I see you are quite near San Francisco - you can start by looking at the VISA procedure , it's fairly straightforward . Since there is a consulate in San Francisco - look here http://www.consulrussia.org/eng/visa-sub1.html

And here - http://ils-usa.com/main.php

Having always traveled independently, we thought we could do a better job than any tour. How misguided (pun intended) we were. Now that we have had the experience of having someone native to the area walk us around and explain things through a personal perspective we realize how much we missed. For St. Petersburg I highly recommend http://www.peterswalk.com/tours.html . This is not a traditional guided tour, but an opportunity to receive some orientation to the area as well as insight into the "Russian soul". I think if you did this upon arrival the rest of your time would be much more meaningful. We really liked the http://www.pushka-inn.com . The location is superb (just around the corner from the Hermitage square), the rooms lovely, the included breakfast at the restaurant next door ample and overall an excellent value. We used this company to get our visa: https://www.passportvisasexpress.com/site/san_francisco_customer_service Note that it costs about the same for a 3-year visa as a one-year, and you never know if you might want to return within that more extended window of time. It is not cheap, so factor that into your planning.

If you like traveling without a guide in other countries and find this satisfying, the same will be true in Moscow and St. Petersburg. Of course it's not either/or - you can certainly take a guided walk or boat tour, for instance.

I cannot emphasize enough the importance of learning Cyrillic if you're going on your own. The book I used was Teach Yourself Beginner's Russian Script, which was great. It breaks down the alphabet into letters that are the same as English, letters that look the same but are pronounced differently, etc. It's out of print, but you can get used copies on Amazon: http://www.amazon.com/Teach-Yourself-Beginners-Russian-Script/dp/0071419861/ref=sr_1_2?ie=UTF8&qid=1459701143&sr=8-2&keywords=teach+yourself+russian+script

Russia is indeed a bit more "foreign" than say, Italy. However, in Moscow and St. Petersburg, I found enough English to be able to get by. Many restaurants had English menus and/or English speaking staff, for instance. This was most emphatically not true in Vladimir and Suzdal (two cities in the Golden Ring outside Moscow). I went with my sister, a Russian speaker, and if she hadn't been there, I would have been in big trouble. So, if you want to see places outside these two big cities, use a guided tour (even if just for that part). Also, Moscow and St. Petersburg are huge cities. Coming from New York, I wasn't intimidated, but those not used to a megacity may not be so cavalier (even I found them overwhelming at times, especially Moscow).

I found both Lonely Planet and Rough Guide to be helpful, and both to have various errors. Look at both, buy whichever one has a more recent edition, and then be prepared to have to discard some of the advice therein. Also, these places change more quickly than places in Western Europe. Be very careful of outdated advice. For instance, I was there in 2001 and 2010, so I won't give you any specifics on getting a visa - that changes constantly.

Just as a teaser, two things I saw and loved that I doubt would be included in any escorted tour are the Gorky House in Moscow (an Art Nouveau wonder) and the Sheremyetov Palace in St. Petersburg (it's now a museum of musical instruments, and the decor is amazing, particularly in the Etruscan Room).

Thanks for all the good advice. Any additional thoughts are welcomed.

One of history's seminal works pertaining to Russian history and culture and a MUST for anyone contemplating a visit or simply interested , is this fine work from 1980 - http://www.amazon.com/Land-Firebird-The-Beauty-Russia/dp/096441841X

This is about you and not about Petersburg. Do you like guided tours? We don't and didn't find that a guide added to our experience in China where we did hire private guides mostly for the logistics; it was easy to have someone drive us places. But once at a site, we didn't need the guide. I felt the same way about our 9 nights in Petersburg. We did hire a guide for the trip to the Catherine Palace again for the ease of logistics for us Olds. Here is our visit: https://janettravels.wordpress.com/2016/01/23/an-easy-trip-to-the-catherine-palace/ There are also snapshots of the Church on Spilled Blood in this photo journal. Having someone pick us up at the apartment and get us in without line ups and shepherd us through the palace steering clear of the tour groups was lovely. But we didn't need commentary because we can read and prepare.

You certainly don't need a guide for the Hermitage (we spent 4 days there), the Russian Museum, the Kazan Cathedral or Church on Spilled Blood or the Faberge Museum. We enjoyed a number of self guided walking tours including a couple from Rick Steves guidebooks. We took the canal cruise suggested by RS that had an English commentator. I would not take one without that as you will be totally clueless. The commentator was not all that good but at least we had some idea what we were seeing. So for people like us who like to do our own thing and can read a guidebook and don't particularly like to be led about, a tour is not needed. If you enjoy tour groups, then go for it. Petersburg is easy to negotiate. It helps if you can read the cyrillic alphabet and it is also useful to have the google translate ap on your phone. We found ourselves translating packages in grocery stores with it and the occasional museum sign or menu. I have one food I need to avoid and so it was handy to have the translator to talk with waiters (I could either show them the sentence, or play it for them or play it to myself and then repeat it to the waiter -- that all worked well)

Dear Russ, I cannot help you with Moscow, but about four years ago, my husband and I went to St Petersburg on our own. But, we did use a private guide for 4 half days. We both feel that our guide absolutely made our trip (we stayed 6 or 7 nights). We used a company owned by Tatyana Chiurikova, www.tour-stpetersburg.com I cannot say enough good things about her and our experience. I emailed her and we worked out a schedule/ sights that was tailored to our interests. She also offered some recommendations, which we took. The guide will meet you at your hotel. And frequently, at certain places, with the guide, we were able to skip the long entrance lines. We had an half day driving tour of the city (car, driver, & guide). You are taken to & go in places such as Peter & Paul Fortress, some of the cathedrals, etc. We had a half day with the guide at the Hermitage which ensured that we would see the major sights there. And, of course, you can stay after your guide leaves or return another day. Also, we had the guide for Peterhof (a must & go by boat) and Catherine's Palace. I hope that you will go to the website. As I said, our guide made our trip. I am positive that we would have missed quite a bit on our own everyday. And I'm sure we would have wasted a lot of time trying to get to various place.This was the best of both worlds, a guide where needed and plenty of time on our own. Whatever you do, I'm sure that you will love St Petersburg! Ashley

I am curious about the lines as we encountered no lines on our trip -- but it was in September. We got tickets for the Hermitage at machines and skipped those lines and our guide for the Catherine Palace which was our only guided experience (as noted before, chosen for the logistics of getting there) had arranged tickets and we didn't have a line, but then we also didn't see lines. We did not find lines at any other site.

Both Moscow and St Petersburg I've done on my own, that is together with the Dear Partner. I can't remember any problem getting where we wanted to go. The Metro systems are well signed, and with a little exercise and patience you can recognize the station names. With a good map and a good guide - we had the Rough Guides - that part of the logistics is solved. The language is a major problem, but the usual tricks of pointing, looking helpless, and making a joke of it all do wonders. I would hate to be led by a guide, but for others it is a comfortable thought.

We also did both cities on our own. I found the DK Eyewitness guide for Moscow has the best map. I used the one from our library (kept the book at home). Took the smaller RS book for St. Petersburg ( his book on northern cities). His map and restaurant ideas were all good. We also downloaded the Google maps in our Android Samsung tablets/phones for both cities and then could get directions to any place we typed in. The blue ball guided us everywhere. I'm sure we missed somethings by not having a guide, but we just enjoy walking around and getting a sense of a place. If you like art, The Hermitage is great. We went 3 times and still missed alot. In St. Peterburg we stayed at the 3 Mosta which we loved (quite and not far from the Church of Spilled Blood.) We also loved the Georgian food in both cities. There's a great Georgian restaurant near the 3 Mosta hotel. We're now in Belarus- very scenic. Enjoy your trip!!

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