Chart Preparation Exercise (5)

Now we can calculate the mean of the individual values (). The number of samples (individual X values) is 25 and this has been entered into the second box for you. Divide the SUM X value by the number of samples and enter this value in the box outlined in red below. Your answer should be rounded to 1 decimal place. When you have done this, click the button to check your answer.

SUM X No. of Samples ÷ =   SUM R No. of Samples (Minus one) ÷ =