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1 |  |  Which of the following sequences for analyzing data is in the best order? |
|  | A) | calculate descriptive statistics, construct graphs, calculate inferential statistics |
|  | B) | calculate inferential statistics, construct graphs, calculate descriptive statistics |
|  | C) | construct graphs, calculate descriptive statistics, calculate inferential statistics |
|  | D) | calculate descriptive statistics, calculate inferential statistics, construct graphs |
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2 |  |  The probabilities used for hypothesis testing are accurate for making generalizations to a population when |
|  | A) | the sample size is large. |
|  | B) | confidence intervals cannot be constructed. |
|  | C) | the significance level is small. |
|  | D) | samples are random. |
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3 |  |  If there is a strong curvilinear relationship between two quantitative variables, Pearson's correlation coefficient will |
|  | A) | estimate this relationship accurately. |
|  | B) | underestimate this relationship. |
|  | C) | slightly overestimate this relationship. |
|  | D) | grossly overestimate this relationship. |
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4 |  |  The magnitude of relationships can be best evaluated using |
|  | A) | tests for statistical significance. |
|  | B) | effect size indices. |
|  | C) | parametric techniques. |
|  | D) | nonparametric techniques. |
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5 |  |  The importance of a relationship is best evaluated using |
|  | A) | the judgment of experts. |
|  | B) | the level of significance used by the researcher. |
|  | C) | the correlation coefficient. |
|  | D) | established guidelines published by statisticians. |
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6 |  |  The best display for showing the relationship between two categorical variables is the |
|  | A) | frequency polygon. |
|  | B) | boxplot. |
|  | C) | scatterplot. |
|  | D) | crossbreak table. |
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7 |  |  When news magazines publish average SAT scores for all of the states in the United States, an individual unit is a |
|  | A) | student who took the SAT. |
|  | B) | school district. |
|  | C) | state. |
|  | D) | country. |
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8 |  |  When a relationship between quantitative variables within a single group is described, the appropriate technique is |
|  | A) | the scatterplot. |
|  | B) | crossbreak table. |
|  | C) | frequency polygon. |
|  | D) | the boxplot. |
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9 |  |  Name one technique for describing groups on a quantitative variable. |
|  | A) | chi square |
|  | B) | t-test for proportions |
|  | C) | percentage |
|  | D) | frequency polygon |
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10 |  |  If inferential statistics are obtained, it should be |
|  | A) | to determine importance. |
|  | B) | before assessing importance. |
|  | C) | after assessing importance. |
|  | D) | to determine randomness of sample. |
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11 |  |  Confidence intervals are preferred to significance tests because they |
|  | A) | describe sample variability. |
|  | B) | do not require a random sample. |
|  | C) | provide more information. |
|  | D) | assess importance. |
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12 |  |  If Eta is larger than r, |
|  | A) | neither should be used. |
|  | B) | a mistake in calculation has been made. |
|  | C) | r overstates the relationship. |
|  | D) | r understates the relationship. |
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13 |  |  A distortion in using proportions and percentages can result from |
|  | A) | unequal base groups. |
|  | B) | difficulty in computation. |
|  | C) | overlapping categories. |
|  | D) | lack of an interval scale. |
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14 |  |  Which statement is true for "outliers"? |
|  | A) | they should be deleted from analysis. |
|  | B) | they can distort summary statistics. |
|  | C) | they are mistakes made in analysis. |
|  | D) | they are of little importance. |
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15 |  |  The authors suggest that researcher use both parametric and nonparametric techniques to analyze data because |
|  | A) | it takes more time and is important. |
|  | B) | it will make you a better researcher. |
|  | C) | when the results are consistent, interpretation will be strengthened. When the results are not consistent, you can discuss the possible reasons. |
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