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Quiz

Week 10

ashleighdawn 10 perguntas

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Perguntas do quiz (10)

  1. 1A researcher wants to compare differences in levels of alcohol consumption between Massey students and Canterbury students. Which statistical test would be most appropriate to analyse the data?
    1. Aregression
    2. BF-test (analysis of variance)
    3. Ct-test
    4. DPearson correlation
  2. 2If both the independent and dependent variables are measured on nominal scales, the most appropriate statistical test would be a ____?
    1. APearson correlation
    2. BF-test (analysis of variance)
    3. Ct-test
    4. Dchi-square
  3. 3Joe is interested in the popularity of different flavours of ice cream. For each person that orders one ice cream cone, Joe makes a note of which flavour was ordered. At the end of the day, Joe tallies up his data: 11 Vanilla, 30 Chocolate, and 13 Strawberry. What is the null hypothesis that Joe is testing?
    1. AThe expected frequencies for Vanilla, Chocolate, and Strawberry are equal.
    2. BThe expected frequencies for Vanilla is 20%, Chocolate is 60%, and Strawberry is 20%.
    3. CThe expected frequencies for Vanilla is 10%, Chocolate is 30%, and Strawberry is 60%.
    4. DAll of the above are plausible null hypotheses (it just depends what you expect).
    5. ENeither A, B, or C are appropriate null hypotheses for a Goodness of Fit Chi-square.
  4. 4Matt is curious whether movie genre preference is associated with a person’s gender. Matt asks 52 men and women whether they prefer comedy films or action films. He finds that among men 12 like action movies and 16 prefer comedies. Among females, 10 preferred action films and 14 preferred comedies. What is the expected frequency of males who prefer action films?
    1. A11.85
    2. B12.00
    3. C10.15
    4. D16.15
    5. E13.85
  5. 5Matt is curious whether movie genre preference is associated with a person’s gender. Matt asks 52 men and women whether they prefer comedy films or action films. He finds that among men 12 like action movies and 16 prefer comedies. Among females, 10 preferred action films and 14 preferred comedies. What is the expected frequency of females who prefer comedies?
    1. A11.85
    2. B12.00
    3. C10.15
    4. D16.15
    5. E13.85
  6. 6Matt is curious whether movie genre preference is associated with a person’s gender. Matt asks 52 men and women whether they prefer comedy films or action films. He finds that among men 12 like action movies and 16 prefer comedies. Among females, 10 preferred action films and 14 preferred comedies. What is the expected frequency of females who prefer comedies? Approximately what is the Chi-square value that Matt obtains?
    1. A0.0075
    2. B-0.00058
    3. C3.841
    4. D5.991
    5. E2.706
  7. 7Matt is curious whether movie genre preference is associated with a person’s gender. Matt asks 52 men and women whether they prefer comedy films or action films. He finds that among men 12 like action movies and 16 prefer comedies. Among females, 10 preferred action films and 14 preferred comedies. What is the appropriate critical Chi-square value at alpha = .05, and what conclusion should Matt arrive at?
    1. A3.841, retain the null hypothesis, there is no association between movie genre and gender.
    2. B7.87, reject the null hypothesis, there is an association between movie genre and gender.
    3. C3.841, reject the null hypothesis, there is an association between movie genre and gender.
    4. D5.991, reject the null hypothesis, there is an association between movie genre and gender.
    5. E5.991, retain the null hypothesis, there is no association between movie genre and gender.
  8. 8The appropriate statistical test for interval or ratio level data (for more than two groups) is the
    1. At-test.
    2. BPearson correlation.
    3. CChi-square.
    4. DF-test (analysis of variance).
  9. 9The t-test and F-test are used for which type of data?
    1. ANominal
    2. BOrdinal
    3. CInterval
    4. DAll of these
  10. 10Which statistical test would be most appropriate to examine the relationship between temperature and number of ice cream cones sold during the month of July?
    1. AChi-square
    2. BF-test (analysis of variance)
    3. Ct-test
    4. DPearson correlation

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Quiz sobre Week 10, criado por ashleighdawn em 26-05-2015.
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English
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