When Scholastic Achievement Test scores (SATs) are sent to test-takers, the percentiles associated with scores are also given. Suppose a test-taker scored at the 98th percentile on the verbal part of the test and at the 29th percentile on the quantitative part. Interpret these results.
A) This student performed better than 98 of the other test-takers on the verbal part and better than on the quantitative part.
B) This student performed better than 2 of the other test-takers on the verbal part and better than on the quantitative part.
C) This student performed better than 2 of the other test-takers on the verbal part and better than 29 on the quantitative part.
D) This student performed better than 98 of the other test-takers on the verbal part and better than 29 on the quantitative part.
Question 2
The probability that an individual is left-handed is 0.12. In a class of 30 students, what is the mean and standard deviation of the number of left-handed students? Round to the nearest hundredth when necessary.
A) mean: 30; standard deviation: 1.78 B) mean: 3.6; standard deviation: 1.9
C) mean: 30; standard deviation: 1.9 D) mean: 3.6; standard deviation: 1.78
Straight Leg Raising Test
Babinski Reflex Test
Normal Distribution of IQ Scores
Prostate-specific antigen test.
Expected Distribution of IQ Scores
IQ scores form what mathematicians call a normal distribution "bell curve"