GIVE TYPED WRITING SO I CAN UNDERSTAND CLEARLY.

IF YOU CANNOT TYPE,PLEASE PROVIDE NEAT AND CLEAR HANDWRITING.DO NOT GIVE BLUR AND CLUMSY WRITING.IT IS HARD FOR ME TO UNDERSTAND.

Kindly give accurate and correct answers.Kindly give step by step working.Do not skip steps. Mention and be very clear about the formula and conversion

.Then,explain to support and prove the working and answers.I do not really understand.I hope you can help me to understand.Explain how you get the answers and about each working.

STA October 2016

QUESTION 1 a) Define each of the following terms; i) Random Sampling Pilot Study (2 marks) b) For each of the following variables, classify whether it is qualitative, quantitative discrete or quantitative continuous variable. i) The number of houses owned by individuals in Perak. ii) The number of rooms available in a hotel. ili) The height of students. iv) The brand names of hand phones used by a group of lecturers. (4 marks) c) An advertising firm is interested in determining how much television advertising to emphasize in a certain state. A sample survey is conducted to estimate the average number of hours each week households watch television. The state has three major towns (Town A, Town B and Town C). There are 300 households in Town A, 430 in Town B and 270 in Town C. A random sample of 200 households will be selected for this study. All the houses have telephone facilities. i) State the population and sampling frame for the above study. il) Determine the variable of interest and the level of measurement for the above study. ili) The sample will be selected using stratified sampling technique. What is ONE advantage of using this technique? How many households should be selected from each town? iv) Determine the most suitable method of data collection. (9 marks)QUESTION 2 The table below depicts the distribution of the ages (in months) in January 2016 for 50 children in District X. Ages (in months) Number of children 30-33 10 34-37 12 38-41 13 42-45 6 46-49 50-53 54-57 a) Calculate the mean and standard deviation of the ages of the children. (5 marks) b) Draw a 'less than' ogive. (5 marks) c) From the 'less than'ogive, estimate the median and interpret the value obtained. (3 marks) d) Calculate the coefficient of skewness by using an appropriate formula. What can you conclude? (3 marks) e) The mean and variance of the ages (in months) in January 2016 for 50 children in District Y were 37.23 and 29.16, respectively. Using an appropriate measure, determine which district shows a more consistent age distribution. (4 marks)