Standard deviation

Find the standard deviation for the following grouped data:

Age (years)	Number of Persons
0–10	15
10–20	15
20–30	23
30–40	22
40–50	25
50–60	10
60–70	5
70–80	10

Your answer:

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Dr Math

Check also with our stddev calculator - input is given as frequency table:

https://www.hackmath.net/en/calculator/standard-deviation?input=5+15+25+35+45+55+65+75%0D%0Af%3A15+15+23+22+25+10+5+10

x is Mid Interval Value and f is frequency

7 years ago Like

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You need to know the following knowledge to solve this word math problem:

statistics

mean
weighted average
standard deviation

Grade of the word problem

high school

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