CORRELATION AND REGRESSION ANALYSES

Instructions: Write the CAPITAL LETTER of your choice on the blank provided before each number.

_____ 1. The process of describing the correlation between bivariate data is called __________.

A.correlation analysisC.regression analysis

B.correlation coefficientD.regression equation

_____ 2. Which of the following has NO correlation?

I.outside temperature and layers of clothing needed

II.extent of fatigue and performance in a speed test

III.reading achievement and body built of a person

A.I and IIC.III

B.II and IIID.I, II, III

_____ 3. A perfect correlation exists when _____ of the points on the scatter plot lie on a straight line.

I.all

II.some

III.most

A.I onlyC.II and III

B.I and III onlyD.I, II, III

_____ 4. If the Pearson Product Moment Correlation Coefficient is 1.05, what is interpretation?

A.moderately high positive correlationC.very high positive correlation

B.perfect positive correlationD.the value is not possible

_____ 5. Given the following values of X and Y. Determine the Pearson Product Moment Correlation Coefficient.

X485358182639

Y56216129

A.-1.08C.-0.98

B.-1.04D.-0.94

_____ 6. The correlation coefficient is based on __________.

A.probability valueC.sample statistics

B.sample dataD.test-statistic value

_____ 7. The y-intercept of the regression equation is the predicted value of the response variable when the predictor variable is __________.

A.negativeC.unknown

B.positiveD.zero

_____ 8. The slope of the regression equation has the same sign as the correlation coefficient between two variables.

A.always trueC.never true

B.sometimes trueD.cannot be determined

_____ 9. When the null hypothesis has been rejected for a specific level of significance, __________.

I.the correlation between the two variables may be caused by the third variable

II.there may be a complexity of interrelationship among many variables

III.the correlation between the two variables may be coincidental

A.I and IIC.II and III

C.I and IIID.I, II, III

_____ 10. From the following data,

X02864

Y411096

I.the null hypothesis is accepted at 0.05 level of significance

II.the critical value is 0.878

III.the degrees of freedom is 5

IV.the simple linear regression analysis cannot be performed

A.I and IID.I, III, IV

B.I and IVE.I, II, III

C.I, II, IV