20) A researcher wants to determine if socioeconomic status (low, moderate, high

Question

20)

A researcher wants to determine if socioeconomic status (low, moderate, high) is related to smoking (yes or no). The Chi-Square null hypothesis for this study is that socioeconomic status is related to smoking behavior.

TRUE OR FALSE

________________________________________________

23)

The Chi-square test for independence compares observed frequencies with:

A) Expected frequencies

B) Standard deviations

C) Standard errors

D) Phi coefficient

__________________________________________

24)If the slope (b1) of a regression equation is -3.4 that means the:

A) Points on the scatter plot are all very close to the regression line

B) Pattern of the points on the scatter plot is moving downward from left to right

C) Relationship between x and y is relatively weak

D) Regression line crosses the y-axis at (0, -3.4)

______________________________________________________

25)

In a negative relationship, as the score of one variable decreases, the score on the second variable decreases.

TRUE OR FALSE WHY

A) Expected frequencies

B) Standard deviations

C) Standard errors

D) Phi coefficient

Explanation / Answer

20. TRUE.

23. EXPECTED FREQUENCIES

24. Option B is correct.

25. TRUE. Negative relationship means as one increases, other should decrease and vice versa.

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