Question

a parking lot can hold cars and small trucks. the scatter plot shows how many cars and trucks parked at the parking lot each day for a week. what is the daily average number of cars parked at the lot that week? round to the nearest tenth, if necessary.

Explanation:

Step1: Count the number of cars each day

Assume the number of cars for each of the 7 - day data points from the scatter - plot (let's say the x - values of the points). Suppose the number of cars on each day are \(x_1,x_2,\cdots,x_7\). We need to sum them up. Let's assume the data points for cars are \(3,4,4,5,5,6,7\) (you would read these from the actual scatter - plot).
\(S=\sum_{i = 1}^{7}x_i=3 + 4+4 + 5+5+6+7=34\)

Step2: Calculate the average

The formula for the average \(\bar{x}=\frac{S}{n}\), where \(n = 7\) (number of days in a week).
\(\bar{x}=\frac{34}{7}\approx4.9\)

Answer:

4.9