To estimate the total number of books Marissa has read in 4 years based on the sample provided, we first calculate the average number of books she read per month from the data in the table:
The sample data shows:
- 4 books
- 1 book
- 3 books
- 3 books
- 2 books
Let's calculate the average (mean) number of books read per month:
- Add the number of books: \( 4 + 1 + 3 + 3 + 2 = 13 \)
- Count the number of entries (months): There are 5 months.
- Calculate the average: \( \text{Average} = \frac{13}{5} = 2.6 \) books per month.
Now, we'll estimate the total number of books read in 4 years. Since there are 12 months in a year, over 4 years, there are:
\( 12 \times 4 = 48 \) months.
Now, multiply the average number of books read per month by the total number of months:
\( 2.6 \times 48 = 124.8 \).
Rounding this to the nearest whole number gives us 125.
Therefore, the estimated population total or the total number of books Marissa has read in 4 years is 125 books.