Question

Use the following data set to answer numbers 1 - 4.

13, 18, 13, 14, 13, 16, 14, 21, 13
What is the mean of the data set?

(2) What is the range of the data set?
(3) What is the mode of the data set?
(4) What is the median of the data set?

please help me i need help with all four questions if possible in explain number the answers.

Answer 1

15, 8, 13, 13

Explanation:

(1) mean = Σx / n = 135 / 9 = 15

(2) range = highest value - lowest value = 21 - 13 = 8

(3) mode = 13 (most repeated value in data set)

(4) for 9 values in a data set, we have that (9 + 1) / 2 = 5th number

median = 13