To estimate the total number of books Marissa has read in 4 years, we first need to compute the average number of books she has read per month based on the provided data.
From the table you provided, the number of books read per month is:
- 4
- 1
- 3
- 3
- 2
Now, let's calculate the average:
\[ \text{Average} = \frac{\text{Total number of books}}{\text{Number of months}} \]
First, we sum the number of books:
\[ 4 + 1 + 3 + 3 + 2 = 13 \]
Now, the number of months represented in the data is 5.
\[ \text{Average} = \frac{13}{5} = 2.6 \]
Now, to find the total number of books she would read in 4 years, we need to determine the total number of months in 4 years:
\[ 4 \text{ years} \times 12 \text{ months/year} = 48 \text{ months} \]
Next, we multiply the average number of books per month by the total number of months in 4 years:
\[ \text{Estimated total} = 2.6 \times 48 = 124.8 \]
Rounding to the nearest whole number gives us:
\[ \text{Estimated total} \approx 125 \text{ books} \]
Therefore, the estimated population total is 125 books.