Hi, everyone!
Alice, thank you for your answer. Since whenever I listen to the word ‘mathematics,’ I feel scary, I have respect for your talent. And I can agree with Azalea’s opinion that you are a cosmopolitan.
From TIME this week: Family affairs
‘Asia is still dominated by political dynasties---retarding the region’s democratic development’
‘From India to China, many people still place a high priority on helping their family first---so average citizens simply may look at family politics as normal.’
Pakistan, Bangladesh, Burma, India, Philippines, China, and Japan. Many Asian nations are dominated by family affairs in politics. First ladies of both Argentina and U.S. will succeed her husband. I wonder whether it is good or bad for public.
It’s weekend now. Time passes really quickly, doesn’t it?! I hope all of you will enjoy this weekend. Good bye!
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3 comments:
Hi, everyone.
Alice, you are right. David suzuki is an environmentalist as well as a geneticist.
I have some questions about statistics. A person who wants to show something with an intention can gather data as he wants. Am I right? How much data are needed to show the precise average?
Recently, public poll showed people want to amend the Japanese constiotution. I don't know the pesron around me was asked? I don't know how much a random sample of quesionnare is precise.
When random is repeatedly repeated, is it converged? Then how about the stock price. Why did LTCM liquidate? It is a backbreaking work for you to explain it to the dull. Sorry, inspite that you are busy.
Hi, my dearest friends
Cherry, you keep on reading TIME, don’t you? I am also subscribing the weekly magazine, I hate to say this, but there are a pile of unread magazines on my desk. What a shame. I only enjoyed the headlines and pictures. When I saw the heading of Philippine President Arroyo’s article, I could easily understand her situation without reading the contents. Because we are very familiar to this kind of articles for years how many changes of regimes occurs. As Cherry mentioned, Asian politicians tendency to favoritism to their own family is die-hard. Nowadays a politician is regarded as a job of succession just like a Kabuku actor and another traditional art’s performer. But special and long-time trainings are required to acquire such special skill. They must start learning from the age of infant. They are destined to become a successor of special cultures. But, is the same destination in the case of politicians? I don’t think so. Of course many men decided to become doctors because their fathers are doctors. But at least they must to pass the difficult official test. But the politicians, who have to take a heavy responsibility for national affairs, don’t have to take such examinations. Oh, sorry I’ve forgotten. They must gain votes of citizens to win elections. After all, we have chosen them!! We are blamed for the choices of the corrupting politicians.
Now I’ll stop my stupid murmuring. See you again. Bye bye.
Dear Cherry and friends,
Hello. How are you, today?
Last night, my sister and I went to a late show, “Hairspray.” It's a remake of 1988 movie. It's also played at musical theaters. Its heroine's name is Tracy, a plump high school girl who likes dancing and singing. Its setting is in the 60s. John Travolta acted Tracy's big mommy. You would never realize she is him without being told. Both are really good at dancing. It's funny and amusing. One thing odd was that “Negro day” was translated as “bulakku dei.” I know the former word is not politically correct. But I wonder why it was translated as “bulakku” when the original movie chose to use the inappropriate word, “negro.” And I don't believe “black” is politically correct, either, if it's used for people. On negro days, black people could make their appearance on TV. It was a form of segregation.
Azalea, both of your questions are difficult to answer. As for a sample size for ideal statistical research, the satisfactory answer will take a whole semester for a teacher in statistics. I'll try to make it simple. First of all, you have to remember we cannot get something perfect unless you get data from the entire population. When we know some facts from a sample, it's a story in the world of probability or prediction. We call it estimation. And there are tremendous amount of statistical theories for it. Suppose you want to estimate the mean weight of garbage dumped by household in a week. Before calculating how much samples are necessary, we need to do study from a small size of samples, say from 50 households. Then we get standard deviation (s.d.) from them. If the s.d. is 1 kilo, and we want to be 99 % confident the sample mean is at most 250 grams away from the true population mean, we must sample at least 121 randomly selected households. You see? We can't get the exact answer for it. In addition, there are a lot of discussion about the methods of random selection.
Your second question was about the issue of derivatives, wasn't it? The downturn of LTCM? I can't answer the question why it happened. They are not statisticians. Their major is economics or financial engineering. If there is a formula to increase money, I would love to study. It seems there isn't any for the time being.
I'll stop here today.
Have a nice weekend.
November 17, 2007 16:07 JST
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