Data on the weekly sales of room air conditioning units were matched with the average temperature and calculations produced sample correlation coefficients, r, in the range of minus 0.75 and minus 0.83. Which of the following statements best expresses a conclusion that can be drawn from the values of r?

(A) There is no relationship between temperature and sales.
(B) As the temperature decreases, the number of room air conditioners sold decreases.
(C) This cannot be determined from the information given.
(D) As the temperature increases, the number of room air conditioners sold decreases.

Name and describe the three most important measures of central tendency. choose the correct answer below. a. the mean, sample size, and mode are the most important measures of central tendency. the mean of a data set is the sum of the observations divided by the middle value in its ordered list. the sample size of a data set is the number of observations. the mode of a data set is its highest value in its ordered list. b. the sample size, median, and mode are the most important measures of central tendency. the sample size of a data set is the difference between the highest value and lowest value in its ordered list. the median of a data set is its most frequently occurring value. the mode of a data set is sum of the observations divided by the number of observations. c. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is the product of the observations divided by the number of observations. the median of a data set is the lowest value in its ordered list. the mode of a data set is its least frequently occurring value. d. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is its arithmetic average. the median of a data set is the middle value in its ordered list. the mode of a data set is its most frequently occurring value.