Reference no: EM133454745
Questions
1. The width of the middle 50% of a distribution, defined as the difference between the third and first quartiles, is referred to as the ______.
a. interquartile range
b. standard deviation
c. range
d. Variance
2. What is the most appropriate measure of variability for the variable type of birth control used (pills, IUD, condom, none, abstinence, other)?
a. standard deviation
b. none of the measures of variability are appropriate
c. variance
d. range
3. In a distribution where all the scores are the same, which of the following is true?
a. the range is greater than the variance
b. the variance is greater than the standard deviation
c. the distribution is skewed positively
d. the standard deviation is zero
4. How many scores is the range based on?
a. two
b. one
c. three
d. all of them
5. Numbers that describe diversity in a distribution are referred to as measures of
a. central tendency
b. standard deviation
c. variability
d. association
6. The quantity that is arrived at by taking the highest score minus the lowest score is referred to as the
a. range
b. interquartile range
c. variance
d. standard deviation
7. Which measure of variability is the average of the squared deviations from the mean and is used for interval-ratio variables?
a. interquartile range
b. range
c. variance
d. standard deviation