Question

Any help? seems easy but keep getting it wrong.

Answer 1

Answer:

69.6 inches

Step-by-step explanation:

The mean height from a frequency table is given by

$\bar x = \frac{ \sum \: fx}{ \sum \: f}$

We need to multiply the frequencies by the weight and sum them up to get:

5×64+2×65+5×66+1×69+3×72+2×75+5×77=1600

The total frequency is 23.

We substitute into the formula to get:

$\bar x = \frac{1600}{23}$

$\bar x = 69.57$

The mean height to the nearest tenth is 69.6 inches