Which of the following measures of spread are based on the mean? check all that apply. a. variance b. standard deviation c. interquartile range d. range

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.

The graph shows how many words per minute two students read. drag to the table the unit rate that matches each graph.