correlation and quiz

QUESTION 1

  1. We compute the frequency expected in each category using known ________ stated in the null hypothesis.
    a.
    b.
    c.
    d.

10 points

QUESTION 2

  1. Which of the following is a statistical procedure used to test hypotheses about the discrepancy between the observed and expected frequencies in two or more nominal categories?
    a.
    b.
    c.
    d.

10 points

QUESTION 3

  1. A chi-square goodness-of-fit test shows that the frequencies observed fit well with those that were expected. Hence, the decision was to:
    a.
    b.
    c.

10 points

QUESTION 4

  1. What is the key assumption for a chi-square goodness-of-fit test?
    a.
    b.
    c.
    d.

10 points

QUESTION 5

  1. Suppose a correlation is computed in each of two samples. If the value of is the same in each sample, and the square root of SSXSSY is larger in sample 1, then in which sample will the value of the correlation coefficient be larger?
    a.
    b.
    c.
    d.

10 points

QUESTION 6

  1. To summarize correlations, we report:
    a.
    b.
    c.
    d.

10 points

QUESTION 7

  1. The coefficient of determination is:
    a.
    b.
    c.
    d.

10 points

QUESTION 8

  1. Which of the following is the assumption that the best way to describe the pattern of data is using a straight line?
    a.
    b.
    c.
    d.

10 points

QUESTION 9

  1. When computing a chi-square goodness-of-fit test, the frequency expected in a given cell should never be less than:
    a.
    b.
    c.
    d.

10 points

QUESTION 10

  1. A researcher computes a 3 x 5 chi-square test for independence. What are the degrees of freedom for this test?
    a.
    b.
    c.
    d.
 
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