The following were the scores obtained by 22 students from Sarawak Secondary School in a mathematics classroom test:
Question
49, 64, 38, 60, 46, 64, 68, 42, 28, 68, 57, 63, 57, 63, 76, 51, 54, 66, 62, 63, 58, 59, 47, 55
(a) Summarize the scores in a frequency table with equal class intervals of size 5. Take the lowest limit to be 35.
(b) Find the mean score by using the data in part (a)
(c) Find the interquartile range
(d) How many students scored above the mean score?
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