Question

S5.1 Which of the following is represents the central tendency of a probability (or frequency) distribution?

a. mean b. median c. skewness d. a. and b.

S5.2 A probability distribution differs from a frequency distribution in that it represents the characteristics of a population. a. True b. False

S5.3 The sample standard deviation is an estimate of a parameter in a ________ distribution that characterizes the spread of possible values. a. binomial b. normal c. χ 2 d. uniform

S5.4 Two normal distributions have, respectively, a. σ ^2 = 4 and b. σ ^2 = 6. If you were to draw these two distributions, the one that is spread out more along the x-axis is a. σ ^2 = 4 b. σ ^2 = 6

S5.5 Circle the answers that might describe a random variable (s). a. interest rates from 20 banks around the state b. the price of a certain model of pump given in a bid from a pump distributor c. a coin toss of 4 fair coins d. the number of wins for the USU Aggie basketball team in a season

Answer 1