# Average age of university students was found to be 24 with a standard deviation of 2. What age group is within 2 standard deviation of mean?

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- TomVLv 76 days ago
24 ± 2(2) = 24±4

Students between the ages of 20 and 28 are within 2 sigma of the mean

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- King LeoLv 76 days ago
each std dev = 2 units

∴ two std devs = 4 units

within 2 std devs:

24 - 4 ≤ age ≤ 24 + 4

20 ≤ age ≤ 28

age group between 20 and 28

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- 6 days ago
Mean +/- 2 * Standard_Deviation

24 +/- 2 * 2 =>

20 , 28

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