Hi I am taking a statistics class and I need help. Thank you

Homework 1

1.A sample of annual salary (in thousand dollars) is as follows:

34,27,303,35,50, 33, 34,210,20,138,38,28 50

a) Find sample mean.

b)Find the sample median.

c)Find the first, third quartiles and IQR.

d)What aspect of the data does IQR measure? State the advantage of using IQR relative to standard deviation?

e)Construct a box plot. Mention a reason that box plot is useful

2. GPA distribution in UPW University is a normal distribution with an average of 2.88 and a standard deviation of 0.6.

(a) About what proportion of the students there have GPA at least 3?

(b) About what proportion of the students' GPA are between 2 and 3.3?

Discussion- Wat are the Pros/Cons of Descriptive Measures?