PROVIDE TYPED WRITING SO THAT I CAN UNDERSTAND BETTER.

Kindly reply with correct answers and step by step working.mention clearly about the formula and conversion.do not skip steps.

QMT110 APRIL2010

QUESTION 1 The following data shows the number of motorcycles repaired by 40 different mechanics on a particular day. a) Find the mean and standard deviation. (5 marks) b) Find the median, mode and interquartile range. (5 marks) c) State whether the mean or the median is more suitable as a representative value of the above data. Justify your answer. (2 marks) QUESTION 2 The following frequency distribution shows the hourly wage of palm oil workers in an estate in Bintulu, Sarawak. Hourly Wage, Frequency. RM 3.50-3.59 3.60 - 3.69 3.70-3.79 3.80 - 3.89 NWOMANN- 3.90 - 3.99 4.00 - 4.09 4.10 - 4.19 4.20 - 4.29 a) Find the mean and median. (6 marks) b) Find the variance and coefficient of variation for the distribution. Describe briefly an advantage of the coefficient of variation as compare with using the variance. (6 marks)