4th Quarter Review

Multiple Choice

The change in the height of the plant depends on the amount of fertilizer added to the soil.

• TRUE

• FALSE

Multiple Choice

Francia earned Php500 for every A she got on her report card.

The dependent variable is:

• Money

• Grade

Multiple Choice

What t-test type compares the means for two groups that are unrelated to each other?

• Independent Samples T-test

• Paired Samples T-Test

• One Sample T-Test

Multiple Choice

Which parametric test would be used for this example?

'Comparing employee satisfaction at Company A and Company B'.

• One Sample T-test

• Paired Samples T-test

• Independent T-test

• One Sample z-test

Multiple Choice

Which parametric test would be used for this example?

'Comparing the average grade of students in this class to the average of HAU STEM students.'

• One sample t-test

• Linear correlation

• Paired samples t-test

• Unpaired samples t-test

Multiple Choice

Which t-test would be used for this example?

'Comparing students' reading skills from when they are in 3rd grade to 5th grade'

• One sample t-test

• One sample z-test

• Independent Samples T-test

• Dependent Samples T-test

Multiple Choice

Which of the following best describes the correlation shown on the graph?

• Positive correlation

• Negative correlation

• No correlation

Multiple Choice

Which of the following best describes the correlation shown on the graph?

• No correlation

• Positive correlation

• Negative correlation

Multiple Choice

Which correlation coefficient (r) best represents the graph?

• 0.95

• 0.85

• 1

• 1.1

Multiple Choice

Linear regression analysis produces an equation of Y = 7 - 3.2X. This indicates that:

• An X value of 0 would would increase Y by 7.

• A 1 unit decrease in X results in a 3.2 unit decrease in Y.

• A 1 unit increase in X results in a 3.2 unit increase in Y.

• A 1 unit increase in X results in a 3.2 unit decrease in Y.

Multiple Choice

The value of the coefficient of correlation r lies between:

• 0 to 1

• -1 to 0

• -1 to 1

• -1 to 0.5

Multiple Choice

Describe the correlation in the graph shown.

• Strong negative

• Strong positive

• No correlation

• Weak negative

Multiple Choice

The strength of r=0.90 and r=-0.90 are the same.

• TRUE

• FALSE

Multiple Choice

r²= .83

• My data is very accurate. We have a 17% uncertainty.

• My data is 17% correct.

• My data is relatively strong. I have 83% accuracy.

• My data is very accurate. I have 17% accuracy.

Multiple Choice

If the coefficient of determination is 0.81, the correlation of the coefficient is

• 0.6561.

• could be either +0.9 or -0.9.

• .405

• 0.81