High School

Annual Precipitation (Inches)

[tex]\[
\begin{tabular}{cccccc}
8 & 11.4 & 25 & 25 & 31.8 & 38.8 \\
41.8 & 51 & 66 & & & \\
\end{tabular}
\][/tex]

Answer :

To solve the problem regarding annual precipitation, follow these steps to find the required information:

1. List of Precipitation Data: We have a set of values representing annual precipitation in inches:
8, 11.4, 25, 25, 31.8, 38.8, 41.8, 51, 66.

2. Count the Number of Entries: Determine how many data points are in the set.
There are 9 values in this list.

3. Calculate the Total Precipitation: Add up all the values to find the total amount of precipitation.
The sum of these values is 298.8 inches.

4. Calculate the Mean (Average) Precipitation: To find the average amount of precipitation, divide the total precipitation by the number of data points.
[tex]\[
\text{Mean precipitation} = \frac{\text{Total Precipitation}}{\text{Number of Entries}} = \frac{298.8}{9} = 33.2 \text{ inches}
\][/tex]

From these calculations, you have:
- The total number of entries is 9.
- The total precipitation is 298.8 inches.
- The mean precipitation is 33.2 inches.

This step-by-step process helps to clearly understand how the figures are derived.