Question

data set b
1 2 3 4 5 6 7 8 9
find the mean of each data set.

Explanation:

Step1: Count data - points

There are 2 + 3+3 + 2=10 data - points.

Step2: Calculate sum of data - values

Sum = \(2\times2+3\times3 + 3\times4+2\times5=4 + 9+12 + 10=35\).

Step3: Calculate the mean

Mean=\(\frac{35}{10}=3.5\).

Answer:

3.5