Crowdly

Yes: r-squared is greater than 0

Yes it is: the appropriate statistical test p-value is smaller than 0.05

No: the F test statistic value is lower than the critical value

If instead of the 39 students only 37 would have answered, with this distribution

I would change the level of significance

I would run an ANOVA instead

I would regroup the variable Interesting before running the Contingency Analysis

the p-value would increase

The number of students that would react with a "Not really" and a blended method preference if both variables would be independent is approximately

1.85

1.15

A Contingency Analysis was run with this sample

The test statistic was computed (8.9) and α=0.05.

the p-value is smaller than α

the p-value is greater than α

the critical value is greater than the test statistic

none of the others

In this sample 24 out of the 39 students prefer the blended method.

What would you do in order to investigate if the proportion of students that prefer the blended method is smaller than 0.7 ?

I would

run a test such that H1: π<0.7

compute a confidence interval for π

run an ANOVA

run a Contingency Analysis only with one categorical variable (course format preference)

Students that prefer the blended method have a different mean level of understanding from those who prefer face to face method

This ANOVA was run

with an additional factor: Gender (Female and Male).

With α=0.10 what would your conclusion be ?

Students that prefer the blended method seem to have the same mean level of understanding of those who prefer face to face method

none of the others

The mean level of understanding seems to be different for Male and Female

The sums of squares were computed

The test statistic (F) is

greater than 4

between 2 and 4

between 1 and 2

An ANOVA with 2 factors (each one with 2 levels) was run with a sample of size 44, in order to explain the level of Understanding.

The Country of Origin (Portugal and Germany) was added as a third factor.

In this ANOVA (with the 3 factors) the Mean Sum of Squares of the Error is equal to 409 and the p-value for Country of Origin is 0.10.

Find out the Sum of Squares of the Country of Origin.

between 1000 and 1200

smaller than 500

between 500 and 1000

greater than 1200

How would you describe H1 ?

Understanding is not independent from the Course format

none of the others

μ_Blended≠μ_face2face

μ_Blended>μ_face2face

An ANOVA with only one factor was run in order to find out if the level of Understanding is not the same for the 2 Genders (Male and Female).

This was done with a sample of size 17. The Sum of Squares of Gender was computed (83.2) and the p-value=0.659.

In order to have a p-value<0.05 for Gender, what would be a valid ratio between the Mean Sum of Squares for Gender and the Mean Sum of Squares for the Residuals ?