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Myra polled twenty-five students in her class to determine the number of movies the students attended at the theater this year. The results are in the table below. She decided to find the mean of a sample using Row 1 and Row 5.

\begin{tabular}{|c|c|c|c|c|c|}
\hline \multicolumn{6}{|c|}{ Number of Movies Attended } \\
\hline Row 1 & 6 & 5 & 2 & 8 & 6 \\
\hline Row 2 & 2 & 0 & 4 & 5 & 2 \\
\hline Row 3 & 3 & 4 & 3 & 0 & 1 \\
\hline Row 4 & 5 & 2 & 6 & 3 & 3 \\
\hline Row 5 & 2 & 3 & 2 & 2 & 4 \\
\hline
\end{tabular}

What is the mean of her sample?

A. 2
B. 4
C. 6
D. 8

Sagot :

GinnyAnsweridn
To determine the mean of the sample using the data from Row 1 and Row 5, you can follow these steps:

1. List the numbers in Row 1 and Row 5:

Row 1: 6, 5, 2, 8, 6

Row 5: 2, 3, 2, 2, 4

2. Combine the numbers from Row 1 and Row 5 into a single list (i.e., the sample):

Sample: 6, 5, 2, 8, 6, 2, 3, 2, 2, 4

3. Calculate the sum of the numbers in the combined sample:

Sum = 6 + 5 + 2 + 8 + 6 + 2 + 3 + 2 + 2 + 4 = 40

4. Determine the number of values in the sample:

There are 10 values in the sample.

5. Calculate the mean by dividing the sum by the number of values:

Mean = Sum / Number of values = 40 / 10 = 4

Therefore, the mean of her sample is [tex]\( \boxed{4} \)[/tex].
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