The table below gives the percent of children under five considered to be underweight.
Percent of Underweight Children Number of Countries
16-21.45 23
21.45-26.9 4
26.9-32.35 9
32.35-37.8 7
37.8-43.25 6
43.25-48.7 1
1. What is the standard deviation? (Round your answer to two decimal places.)
2. Consider that unusual values are typically more than 2 standard deviations ( ±2sx ) from the mean.Therefore, which interval(s) could be considered unusual? Explain.
