Question

find the mean number of cookie boxes sold this week by a girl scout troop. 12 9 15 14 29 17 20 25 12 (1 point) 12 17 19 15

Explanation:

Step1: Calculate the sum of the data

$$12 + 9+15 + 14+29+17+20+25+12$$
$$=(12 + 12)+9+(15 + 14)+29+17+20+25$$
$$=24+9+29+29+17+20+25$$
$$=33+29+29+17+20+25$$
$$=62+29+17+20+25$$
$$=91+17+20+25$$
$$=108+20+25$$
$$=128+25$$
$$=153$$

Step2: Calculate the number of data points

There are \(n = 9\) data points.

Step3: Calculate the mean

The formula for the mean \(\bar{x}=\frac{\sum_{i = 1}^{n}x_{i}}{n}\), so \(\bar{x}=\frac{153}{9}=17\)

Answer:

17