In the formula for total variance, how is X2 calculated? a. ...

[Destiiny22]

In the formula for total variance, how is X2 calculated?
 
  a. Add all the scores and then square the sum.
  b. Add the scores in one group and then square the sum.
  c. Square all the scores, and then add the squared values.
  d. Square the scores for one group, and then add the squared values.

Question 2

One way to check one's calculations for the summary table of a one way ANOVA is to be sure that _____.
 
  a. SSB = SSW + SST c. MSB + MSW = MST
  b. dfB + dfW = dfT d. a and b

[Zebsrer]

Answer to Question 1

C
First square every score, and then add the squared values. When told to multiply (square) and add, but given no parentheses, multiply first and then add.

Answer to Question 2

D
There is no Mean Square Total value in an ANOVA summary table, but for the sums of squares and the degrees of freedom both, the within and between values must equal the total value.

[Destiiny22]

Thanks for the timely response, appreciate it

[nguyenhoanhat]

Excellent