MATH302 Week 2 p.4

Question 7 1/ 1 point Suppose that a histogram of a data set is approximately symmetric and bell shaped. Approximately what percent of the observations are within one standard deviation of the mean? 50% 95% vie) 68% 99.7% Question 8 1/ 1 point The median can also be described as: the middle observation when the data values are arranged in ascending order the second quartile the 50th percentile v o) all of the above Question 9 1/ 1 point The lengths (in kilometers) of rivers on the South Island of New Zealand that flow to the Tasman Sea are listed below. Find the mode. See Attached Excel for Data. river length data.xlsx no mode 64 vie 56 &64 32 56 w Hide question 9 feedback The two values that appear most often are 56 and 64. Question 10 1/ 1 point The following data show the lengths of boats moored in a marina. The data are ordered from smallest to largest. See Attached Excel for Data. boat length data.xlsx Identify the Mode. 25 27 v e 25and 27 25,26 27 and 33 40 w Hide question 10 feedback The mode is the length that appears the most frequently. There are two modes, 25 and 27, each appearing three times.