Question

given the following set of numbers, calculate the median: 12, 7, 5, 19, 8, 10, 15, 6, 11, 9.
9
9.5
10
11
question 2
given the following set of numbers, calculate the mean: 12, 7, 5, 19, 8, 10, 15, 6, 11, 9.
9.7
10
10.2
11.3

Explanation:

Step1: Sort the numbers

$5,6,7,8,9,10,11,12,19$

Step2: Find the median

There are 9 numbers. The middle - numbered value is the 5th one. So the median is 9.

Step1: Calculate the sum of the numbers

$12 + 7+5 + 19+8 + 10+15+6+11+9=92$

Step2: Calculate the mean

The mean $\bar{x}=\frac{92}{10}=9.2$

Answer:

A. 9