Question

find the mean for the following group of data items.
80, 20, 50, 20, 40
the mean is \boxed{}. (type an integer or a decimal.)

Explanation:

Step1: Sum of data items

Sum \(=80 + 20+50 + 20+40\)

$$
LATEXBLOCK0
$$

Step2: Number of data items

Number of data items \(n = 5\)

Step3: Calculate the mean

Mean \(=\frac{\text{Sum of data items}}{\text{Number of data items}}=\frac{210}{5}\)

$$ \frac{210}{5}=42 $$

Answer:

42