The following table shows the results of an analysis of vari

The following table shows the results of an analysis of variance comparing four treatment conditions with a sample of n = 5 participants in each treatment. Note that several values are missing in the table What is the missing value for MS within?

Solution

As the total SS is 62, then

SSwithin = 62 - 30 = 32

As there are 4 treatments with 5 participants each, there are 20 participants.

As

dfwithin = number of participants - number of treatments

then

dfwithin = 20 - 4 = 16

Thus,

MSwithin = SSwithin / dfwithin = 32/16

= 2 [ANSWER, OPTION A]