Choose the correct answer.
1. What is the percentile rank of 60 in the distribution ofN(60, 100)?
a. 10
b. 50
c. 60
d. 100
The skewness value for a set of data is +2.75. This indicatesthat the distribution of scores is which one of the following?
Highly negatively skewed
Slightly negatively skewed
Symmetrical
Slightly positively skewed
Highly negatively skewed
For a normal distribution, all percentiles above the 50th mustyield positive z-scores. Is this true or false?
The distribution of variable X has a mean of 10 and ispositively skewed. The distribution of variable Y has the same meanof 10 and is negatively skewed. Are the medians for the twovariables the same or different?
