Question

The table below gives the percent of children under five considered to be underweight.

Percent of Underweight Children	Number of Countries
16–21.45	22
21.45–26.9	4
26.9–32.35	11
32.35–37.8	6
37.8–43.25	6
43.25–48.7	2

What is the best estimate for the mean percentage of underweight children? (Round your answer to two decimal places.)

Answer 1

percent of Underweight children	Number of countries(f)	Mid-point (x)	fx
16 - 21.45	22	18.725	411.95
21.45 - 26.9	4	24.175	96.7
26.9 - 32.35	11	29.625	325.875
32.35 - 37.8	6	35.075	210.45
37.8 - 43.25	6	40.525	243.15
43.25 - 48.7	2	45.975	91.95
Total	51		1380.075

The best estimate for the mean () =