How to solve standard deviation

How to Calculate Standard Deviation:

Collect your data

Calculate the mean of the data set

Subtract the mean from each number; square result

Add squares together; divide by number of items

Take the square root to find standard deviation

Hope this Helps and works, Good Luck!!!

Step-by-step explanation:

How to Calculate Standard Deviation:

1.  Collect your data

2. Calculate the mean of the data set

3. Subtract the mean from each number; square result

4. Add squares together; divide by number of items

5. Take the square root to find standard deviation

6840 customers ... 45 days
x customers = ? ... 1 day

If you would like to know how many customers were in Jasigreen's class in 1 day, you can calculate this using the following steps:

6840 * 1 = 45 * x
6840 = 45 * x     /45
x = 6840 / 45
x = 152 customers

The correct result would be 152 customers.