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.

Question

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

salma · Answer

a,c

PsyDAG · Answer

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.