# MCQs: ANOVA

THESE ARE SOME OF THE QUESTIONS I AM WORKING ON, IF POSSIBLE CAN YOU PLEASE LET ME KNOW IF MY ANSWERS ARE CORRECT/SOLVE? THANK YOU!!

For an ANOVA comparing three treatment conditons, what is stated by the null hypothesis (Ho)?

* at least one of the 3 population means is different from another mean

* none of these choices are correct (this is the one I chose)?

* there are no differences between any of the population means

* all 3 of the population means are different from each other

For an ANOVA comparing 3 treatment conditions, what is stated by the alternative hypothesis (H1)?

* all 3 of the population means are different from each other

* none of these choices is correct

* at least one of the 3 population means is different for another mean (this is the one I had chosen?)

* there are no differences between any of the population mean

When comparing more than 2 treatment means, why should you use an analysis of variance instead of using several t tests?

* there is no advantage to using an analysis of variance instead of several t test

* the analysis of variance is more likely to detect a treatment effect

* using several t test increases the risk of a Type I error (this is the one I had chosen)?

* using several t test increases the risk of a Type II error

In an analysis of variance, differences between participants contribute to which of the following variances?

* neither between treatments variance nor within treatment variance (this is the one I had chosen?)

* between treatments variance but not within treatment variance

* both between treatments variance and within treatment variance

* within treatments variance but not between treatments variance

In an analysis of variance differences caused by treatment effects contribute to which of the following variances?

* between treatment variance but not within treatment variance

* neither between treatments variance nor within treatments variance

* within treatments variance but not between treatments variance

* both between treatments variance and within treatments variance (this is the one I had chosen?)

On average what value is expected or the F-ratio if the null hypothesis is true?

* k-1

* 1.00

* N-k

* 0 (this is the one I had chosen)?

On average what value is expected for the F-ratio if the null hypothesis is false?

* much greater than 1.00

* between 0 and 1.00

* 1.00 (this is the one I had chosen)?

*0

A research study comparing three treatments with n=5 in each treatment produces T1=5, T2=10, T3=15, with SS1=6, SS2=9, SS3=9 and EX2=94. for this study what is SS total?

*34

* 10 (?)

* 68

* 24

https://brainmass.com/statistics/hypothesis-testing/mcqs-anova-586031

#### Solution Preview

For an ANOVA comparing three treatment conditons, what is stated by the null hypothesis (Ho)?

* at least one of the 3 population means is different from another mean

* none of these choices are correct (this is the one I chose)?

* there are no differences between any of the population means

* all 3 of the population means are different from each other

For an ANOVA comparing 3 treatment conditions, what is stated by the alternative hypothesis (H1)?

* all 3 of the population means are different from each other

* none of these choices is correct

* at least one of the 3 population means is different for another mean (this is the ...

#### Solution Summary

The solution provides answers to multiple choice questions on ANOVA. The ANOVA comparing three treatment conditions are provided.