# Regression quiz

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/10
3 votes, 5 avg
71 Regression quiz

1 / 10

How many variance has been explained by a correlation of .70?

2 / 10

What is R2?

3 / 10

If we find a correlation of .90 between time spent watching tutorial recordings and Week 5 Quiz scores. What is the proportion of variance in the Quiz scores that can be explained by time spent watching tutorial recordings?

4 / 10

What is b0 in regression analysis? (modified from Field, 2013)

5 / 10

This figure presents JASP results of simple analysis which includes a predictor variable, namely advert and the outcome variable, namely sales. How many variance in album sales can the adverts explain as suggested by a model? 6 / 10

Which regression assumption does the Durbin- Watson statistic test?

7 / 10

This figure presents JASP results of simple analysis which includes a predictor variable, namely advert and the outcome variable, namely sales. Which value tell us that the result is highly unlikely that adverts and album sales were not related to each other. 8 / 10

If a researcher wants to know which factors (listening score, grammar score, vocabulary score and reading score) are best predict student performance in the Writing 202 course, which statistical procedure is most suitable?

9 / 10

What is coviraince? (modified from Field, 2013)

10 / 10

A researcher finds that time spent on reviewing weekly tutorial recordings is a good predictor of the test score:
Y = 0.50a + 20
Where Y= test score, a= time spent reviewing weekly class recordings (hours)
What is a predicted score if students spent 10 hours watching the class recordings?