Unit 0: DataB

10, 3, 5, 7, 10, 3, 10, 5, 2
The numbers above represent the quiz results for a survey on happiness. What is the median score for the class?

• 3

• 5

• 7

• 10

3, 4, 5, 5, 7, 7, 7, 8, 8, 10
Ten participants in a treatment group were asked to rate their feelings of self worth on a scale of one to ten, with a value of ten indicating a very positive feeling of self-worth. The data for the participants are above.
What is the mode for these data?

• 4

• 5

• 6

• 7

3, 4, 5, 5, 7, 7, 7, 8, 8, 10
Ten participants in a treatment group were asked to rate their feelings of self worth on a scale of one to ten, with a value of ten indicating a very positive feeling of self-worth. The data for the participants are above.
What is the mean for these data?

• 6

• 6.4

• 7

• 7.33

The graphs depict data collected on the levels of implicit attitudes in three samples of students in their first year at a university. Which of the following is true of the frequency distributions shown in the graphs?

• Distribution A has more variation than distributions B or C.

• Distribution B has more variation than distributions A or C.

• Distribution B and distribution C have the same variation.

• The standard deviation of distribution B is zero.

The graph depicts data from a test of general intelligence org. Which of the following best describes the graph?

• Bimodal distribution

• Normal distribution

• Positively skewed distribution

• Negatively skewed distribution

In a normal distribution of scores on assessments like those for intelligence, which of the following statements is true about the area that falls between one standard deviation above and one standard deviation below the mean?

• It contains the bottom 50% of the distribution.

• It contains the middle 50% of the distribution.

• It contains the bottom 68% of the distribution.

• It contains the middle 68% of the distribution.

A teacher gave a standardized test to students measuring their achievement in school. A student’s test score of 86 is at the 42nd percentile. This means that this student has which of the following?

• Answered 86 percent of the test items correctly

• Scored the same as 42 of her fellow students

• Scored the same as or higher than 42 percent of her fellow students

• Scored the same as or higher than 58 percent of her fellow students

A student who obtained a percentile rank of 75 on an achievement test is best characterized as having

• ranked 75th from the top in a group of 100 test takers

• answered 75% of the test questions correctly

• scored higher than 75% of the test takers

• scored 75% higher than the average test taker

The next questions are based on the following set of data depicting the number of times participants in a study experienced the gambler's fallacy.

A student who scored at the mode would have how many points?

• 5

• 6

• 8

• 10

The next questions are based on the following set of data depicting the number of times participants in a study experienced the gambler's fallacy.
Which of the following is the median score?

• 5

• 6

• 8

• 10