The standard deviation is obtained using:
The mean is 2.91 and obtained by
For
As part of an annual plan, a research firm surveyed several communities and gathered the following data. The table shows the number of children from 98 families selected at ramdom.
Number of children
0, 1, 2, 3, 4, 5, 6
Number of families
6, 13, 20, 24, 19, 11, 5
a) calculate the standard deviation for the number of children in each family
the mean for the number of children would be 3??
how do I get the standard dev.?
If you can find the functions and in your calculator you can do it.
If you know how to find the standard deviation directly, you can do it too, for me, it's the function.
For this though, I need to use the "1-Var" in stats mode and activate the frequency.