Quiz – Central Tendency

Find the mean for this sample of scores below.
Scores: 1, 5, 5, 9

Find the mean for this sample of scores below.
Scores: 0, 8, 13

Find the population mean given that there are N = 5 scores and ΣX = 40.

Find the mean for the scores shown in the frequency distribution table below.

X       f 

5        3

4        1

3        3

2        2

1        2

Find the mean for the scores shown in the frequency distribution table below.

X      f 

5        1

4        2

3        3

2        2

1        2

Find the number of scores in a population given that: μ = 7 and ΣX = 42.

Find ΣX for a sample given that: M = 12 and n = 6.

If after all the scores in a sample are each multiplied by 4, the mean is found to be M = 24, what was the mean of the original scores?

3 points are added to each score in a population. If the original mean was 60, what is the mean of the newly created distribution?

Two samples are being combined. Sample #1 has n = 5 scores has a mean of M = 10, and a Sample #2 has n = 10 scores has a mean of M = 5.  What is the mean for the newly combined set of scores?