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Sunday, March 29, 2009
Yesterday lesson at MH was quite interesting. The quiet class not responding to lecturer was amusing. Size of the class was smaller compared to HQ. MH was inaccessible and located up a hill. After alighting from the Bus, walked all the way to the right and turn into a small road and uphill. With bags of notes and file on hand, walking up the hill slope was a struggled. We spent 30 minutes walking to reach there. My spect and notes===>>  Collon!! Bought this from machine during 10 min break ==>  Small lccture room ===>>  Old photo..me and dad at restaurant!  Thursday, March 26, 2009           Tuesday, March 24, 2009 I LOVE MY DEAR! Monday, March 23, 2009 Namie Amuro - CAN YOU CELEBRATE？ I love this song, back a few years a JAP show.. 可爱教主叶熙祺《勇敢》MV Her link http://blog.sina.com.cn/s/indexlist_1566188365_2.html 可爱教主叶熙祺《大眼睛》MV STATISTICS Madness Video tutorial 6.1 Principles of confidence intervals The key ingredients to confidence intervals are outlined as well as their interpretation as a indicator to the level of uncertainty attached to a point estimate. A generic template is offered which can subsequently be applied to the various scenarios encountered in Statistics 1. To view the video, click here. Duration: 11 minutes 50 seconds. Video tutorial 6.2 Review of confidence interval scenarios: single parameters Building on the generic template given in Video tutorial 6.1, the different scenarios of single point estimates which appear in the Statistics 1 subject guide are reviewed. These comprise confidence intervals estimating a single population mean, μ, and a single population proportion, π. For the former case involving means, consideration must be given to whether the population variance, σ 2, can be assumed to be known and, if not, the mechanism for dealing with this is discussed. To view the video, click here. Duration: 15 minutes 26 seconds. Video tutorial 6.3 Review of confidence interval scenarios: differences between two parameters This Video tutorial extends Recording 6.2 to consider constructing confidence intervals for differences between two population means, μ1 - μ2, and the difference between population proportions, π1 - π2. Again for the mean case, attention must be paid to whether the two population variances, σ21 and σ22 respectively, are known. If unknown, estimating the variances individually and producing a pooled estimate are considered. To view the video, click here. Duration: 19 minutes 27 seconds. Video tutorial 6.4 Computing minimum sample size to achieve a given confidence interval width Question: James thought the population proportion of the electorate who intended to vote for the incumbent government in the forthcoming election was 34%. To investigate this hunch he decides to estimate this with a sample proportion. He sets a tolerance limit of 0.10 with 90% confidence. What is the minimum sample size required? To view the video, click here. Duration: 11 minutes 12 seconds. Video tutorial 6.5 Confidence interval for the difference in proportions Question: A researcher was investigating computer usage among students at a particular university. 200 undergraduates and 100 postgraduates were chosen at random and asked if they owned a laptop. It was found that 81 of the undergraduates and 63 of the postgraduates did. Find a 95% confidence interval for the difference in the proportion of undergraduates and postgraduates who own a laptop. To view the video, click here. Duration: 9 minutes 34 seconds. Video tutorial 6.6 Confidence interval for a population mean, variance unknown Question: A random sample of 8 students was taken and their scores in a statistics paper recorded. The sample mean was calculated to be = 71.2$ and the sample variance, s2, was 4.9. Compute a 99% confidence interval for the mean statistics score for all students taking the course. How can the interval width be made narrower? Why? To view the video, click here. Duration: 11 minutes 34 seconds. Video tutorial 6.7 Confidence interval for the difference in population means, variances unknown Random samples are taken from two populations with distribution N(μX,σ2) and $N(μY, σ2) (i.e. their variances are the same). The summary statistics for the two samples are as follows: Sample size, n Sample mean, m Sample Variance s2 x-data 19 7.0 1.69 y-data 25 5.1 2.56 Compute a 95% confidence interval for the difference μX - μY between the two population means. To view the video, click here. Duration: 13 minutes 5 seconds. Video tutorial 7.1 Principles of hypothesis testing Similar to Recording 6.1 for confidence intervals, this video explains the mechanics of hypothesis testing. Formation of the hypotheses is discussed along with the concept of a test statistic and its associated distribution. Specification of a significance level, α, is covered and its role in determining critical values in order to define an appropriate critical/rejection region. Interpretation of how to draw conclusions from comparing an observed test statistic value with the critical values is also covered. To view the video, click here. Duration: 40 minutes 47 seconds. Video tutorial 7.2 Test statistic scenarios This recording is the hypothesis testing equivalent of Recordings 6.2 and 6.3. All the test statistics associated with testing (i) single population means (ii) differences between population means (iii) single population proportions and (iv) differences between population proportions are covered. Just as with confidence intervals, unknown population variances must be treated appropriately when testing means. To view the video, click here. Duration: 23 minutes 23 seconds. Video tutorial 7.3 Testing a single population mean Question: It may be assumed that the length of nails produced by a particular machine is a normally distributed random variable, with standard deviation 0.02 cm. The lengths of a sample of 5 nails are 1.14, 1.15, 1.14, 1.12 and 1.16 cm. Test, at the 5% significance level, the hypothesis that the machine produces nails with a mean length 1.12 cm. To view the video, click here. Duration: 9 minutes 51 seconds. Video tutorial 7.4 Testing the difference between population means Question: The mean reaction times, in hundredths of a second, of two groups of subjects to a flashing-light stimulus are measured. The first group, denoted by subscript 1, comprised individuals who were new to the experiment while the subjects in the second group, denoted by subscript 2, had previously taken part. Summary statistics for the two samples are given below. 1 = 3.0 s21 = 0.064 n1 = 10 2 = 2.7 s22 = 0.031 n2 = 8 Test if experience has had an effect on the mean response time. To view the video, click here. Duration: 15 minutes 25 seconds. Video tutorial 7.5 Testing a single population proportion Question: An accounting firm wishes to test the claim that no more than 1% of a large number of transactions contains errors. In order to test this claim, they examine a random sample of 144 transactions and find that exactly 3 of these are in error. What conclusion should the firm draw? To view the video, click here. Duration: 11 minutes 0 seconds. Video tutorial 7.6 Testing the difference between population proportions Question: A market research company has conducted a survey of adults in two large towns, either side of an international border, in order to judge attitudes towards a controversial internationally broadcast celebrity television programme. The following table shows some of the information obtained by the survey: Town A Town B Sample size 40 40 Sample number approving of the programme 24 22 Conduct a formal hypothesis test, at the 5% significance level, of the claim that the population proportions approving the programme in the two towns are equal. To view the video, click here. Duration: 12 minutes 11 seconds. Half way through, my mind seems to be blank. ENDURE for this 2 months!! Jia you x 1000000! Friday, March 20, 2009 BIRTHDAY CELEBRATION with my brothers!! ARMY GUYS! Thanks Kang wei for the dinner treat.  =) Had movie STREET FIGHTER: Legend of CHUN LI I was laughing at some scenes of the movie, Kang wei had no expression at all. Wahahaha!! I was a XIN FU girl, my boy just bought me dinner and bubble tea help me buy some grocery at the prime market after his "work". THANK YOU!! He is concern whether I have food to eat at home. Nowadays always cope up at home to rest and read up revision. The VLE online teaching was good but my eyes watering too long, so I can't glue to the screen. One video teaching takes about 20 minutes. It is clear and understand Statistics better through online teaching. Eve was telling me the other day she has no mood to study exam, me too! Thank god, all my prelim papers has been MARKED. The first paper I use correction fluid which was not allowed to use and paper will not be mark or return. Wonder how many papers I pass? 1. Econs 2. Statistics 3. Maths 4. POA 5. PBF Life is great now as I recovering and enjoy everyday lazing around slacking. Studies is not my priority now. Health is! Thursday, March 19, 2009 My sister make MILO..nice!!     Wednesday, March 18, 2009 Me deeply fell in love with TAIWAN drama. Going to watch all of it!! 樱野三加一  Yes! Finish Stats Chapter 3 slides VLE. Yoohoo! Going on the next chapters! Tuesday, March 17, 2009  Apparently doing nothing at home for the last few days. Finally finish up the last episode for 剪刀石头布 a taiwan drama, at home hopping onto my lappy for hours. Getting all the stuffs ready for my overseas lecturer Revision which is next Saturday at SIM Management House (MN), located at 41 Namly Avenue off Bukit Timah Road. I will be taking Bus 74 to the place which I never been before, excited!! Checklist of items to bring: 1. Subject Guide 2. Past Year Exam Questions 3. Prelim Exam Questions Paper 4. Audio/voice recording 5. Healthy Attitude 6. Blank Papers After releasing myself from many things, past still bothered me from time to time I will still cry at home. Things cannot be unchanged so can't help it but felt remorseful. Flunk my prelims? I Pray hard not to fail any of the papers. Letting myself down again? NO I am not the WEAK minru, fail will not be in my DICTIONARY. There are lots of fears in my heart, hiding them will not solve any problem. i MISS my jie meis..even though they are not around..they are in my heart. I will not forget the taste of the coffee chocolate cake!i LOVE u guys! Something happen between me and my boy, we are FINE now. I'm going to decorate my desk with new book holder tml with my boy! YEah! Study Group, anyone want to join? I NEED 1. Courage 2. Motivation 3. Confident 4. Power 5. Memory 6. Care&Concern  Friday, March 13, 2009 LUNCH at CLARKE QUAY!! We had lunch at food juction upstair, ate half chicken and rices!! $15.50!! Nice scenary opposite the food court.      RED bean ice kachang fell on the table. Too bad cannot eat the top part of it.  My sister!!  My mum is so sweet!  Opposite shop houses and boats. I love the colours!    Fallen ice kachang!   Tuesday, March 10, 2009 My yellow QQ!!  WHEN both not around!! HAHA!!  Practically flunk all the papers, time to study!! Prelim FINALLY OVER!!  WAKE UP in the morning!! Sunshining in the sky. Brush my teeth, white white.  Drink coconut drink-> NICE!  Sunday, March 8, 2009 THURSDAY!! YEAH!! IT was a happy day for me! Afternoon lunch with my violin friend, bought me to asic cafe with free flow of ice cream and drinks for only $15. Wahahaha!! Worthwhile man! WAlk walk at PS and shop at DAISO. My friend bought files and note book for his starting his class in SMU in April, IT course! Oh man, can I join him? IT a fun and challenging course! He bought me a softtoy. His message: The happiest periods of our lives are times where we have nothing to worry and everything to play. I hope this donkey will remind u of these happy moments and always feel the happiness of a child. =) When I was a child, used to dance and sing and play with no worries.  About 6pm went BUGIS to meet Zhong hua for present!!  I love it is a handbag!! WOOo!! A woman now so a handbag for clubbing? Hahaha!! Zhong hua cut her hair short real SHORT man! And what did I do to my hair, perm it. Next time straighten and color? Save money first. HAAAHAH! I am just another poor student! Met my boy, Eileen and Yvonne out for dinner. They bought me a cute softtoy. So sweet and kind of them! I was mad at my boy, he keeps taking us the wrong way. I want someone that could lead me on in life and places. The feeling of lost is horrible. My face was red, my prelim that causes it! Or my mask also no cure to redness. My colleagues are so nice, they don't mind about my face, etc. My friend too he still laugh and chat with me, jumping around like a young child to get ice cream. So I been living in the earth for 21 years. That's long man! many people telling me there is still a long way for u, but I can't see my way. I have no mood to study and gonna flunk all the prelim papers. Did try my best to study overnight, it will not help in the eleventh hour. My awful face,hohoho.. Lucky, I bought The X Family DVD that entertain me, if not I will be stress to dead. Uni is not hard but is time consuming!! YES! You need a lot brain cells to absorb and remember and analyse all the question. During exam, u got to connect all the cells together and write a nice piece of work.            *I wish to watch movie with eug and kang* 21 birthday is meaningful all my good and best friends celebrate for me and wish me birthday!!yeah!! |
Min Ru♥ " She’s a lil girl, living in her perfect world Until the perfect guy come, and bring everything together.." Time for a Msg Sweet ones. Genie Zhou Jeanette Felicia Chen Jing Xuan Ann shu xian Xue Sha Sha shopaholic Naomi Amanda Julia Andrew Yvonne Eileen Jie Min Liyan Amy Paul Karen Eug Florence Joel Jackie Phebe Sze Rong Zhi Xiang XinYi Ariel Gladys January 2008 February 2008 March 2008 April 2008 May 2008 June 2008 July 2008 August 2008 September 2008 October 2008 November 2008 December 2008 January 2009 February 2009 March 2009 April 2009 May 2009 June 2009 July 2009 August 2009 November 2010 March 2011 May 2011 June 2011 July 2011 August 2011 September 2011 October 2011 November 2011 January 2012 April 2012 May 2012 June 2012 July 2012 August 2012 March 2013 October 2013 June 2014 imeem . 1 song Playing ♥ I kissed a GIRL Designer : Chili. x o x o |