Q1 i) Following are the scores for students of physics (X): X XXXXXXXXXX 8.9 8 a) Determine the value of sample mean, sample median and 12.5% trimmed mean. Compare these values and comment on them. b)...

Q1 i) Following are the scores for students of physics (X):

X 15 13 18 14.5 12 11 8.9 8
a) Determine the value of sample mean, sample median and 12.5% trimmed

mean. Compare these values and comment on them.
b) A sample of three scores is drawn from the above population. How many such

samples can be drawn if it is a random sample?
c) Suppose two such samples are (18, 12, 8)) and (13, 14.5, 11). What are the

respective sample means? Is the sample mean a random variable and why?