statistics

A standardized third grade reading test, called the We Can Read Test, has a mean of 50 with a standard deviation of 10. A developmental psychologist conducts a study, where he assesses the reading ability of a random sample of 75 third graders using the We Can Read Test, and finds a mean of 53 with a standard deviation of 12.
Which of the following is a statistic?
a. 50
b. 53
c. 75
d. 10
Which of the following is a parameter?
a. 75
b. 53
c. 10
d. 12

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  1. a,c

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  2. Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.

    A statistic is a measure on a sample, while a parameter is a measure on a population.

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