Question

the students in a statistics class are graphing the ages of their 9 parents. their parents ages are: 46, 56, 46, 46, 50, 57, 57, 51, 46. what is the mean age of the parents? round your answer to the nearest whole number.

Explanation:

Step1: Sum all parent ages

The ages are 46, 56, 46, 46, 50, 57, 57, 51, 46.
Sum = \( 46 + 56 + 46 + 46 + 50 + 57 + 57 + 51 + 46 \)
Calculate step - by - step:
\( 46\times4 = 184 \), \( 57\times2 = 114 \), \( 56+50 + 51=157 \)
Total sum = \( 184+114 + 157=455 \)

Step2: Calculate the mean

Mean = \( \frac{\text{Sum of ages}}{\text{Number of parents}} \), number of parents \( n = 9 \)
Mean = \( \frac{455}{9}\approx50.56 \)

Step3: Round to nearest whole number

Rounding \( 50.56 \) to the nearest whole number gives 51.

Answer:

51