0.25 out of 0.25 pointsLet’s assume you are conducting an experiment to determine the effect of

Question 1

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Let’s assume you are conducting an experiment to determine the effect of a new drug on the incidence of epileptic seizures. You select 20 epileptics from the 150 epileptics being treated at a nearby hospital and administer the drug to them. You record the number of seizures in each of the 20 subjects for one month. The 20 subjects constitute _________.

Question 2

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One task of research is to study a subset of the population and try to make inferences about the whole population.

Question 3

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A researcher has collected some data on the amount of time in seconds (to the nearest 0.1 second) that it took trained rats to run through a maze. The data is shown below arranged in a frequency distribution of grouped scores.

The cumulative percentage for the interval 5.2-5.5 is _________.

Question 4

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Assume your task is to group the raw scores given below into a frequency distribution of approximately 12 intervals of equal width.

The value of i is _________.

Question 5

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When individual scores are combined into groups, _________.

Question 6

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If an investigator determines that Carlo’s score is five times as large as the score of Juan, the measuring scale used must have been a(an)_______ scale.

Question 7

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Sex of children is an example of a(n) _________ scale.

Question 8

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An accountant is preparing a graph showing the number of sports cars of various makers purchased this year. The number will be plotted on the ordinate and the various manufacturers on the abscissa. The

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