Question

find the population mean or sample mean as indicated

sample: 20, 10, 7, 9, 14

the sample mean is
(type an integer or decimal rounded to three decimal places as needed.)

Explanation:

⚡ Using what you learned: mean (arithmetic average)

Step 1: Sum the data values

$$ \sum x = 20 + 10 + 7 + 9 + 14 = 60 $$

Step 2: Divide by the sample size

The number of data points is \( n = 5 \).

$$ \bar{x} = \frac{60}{5} = 12 $$

Answer:

12