Beyond Frequency Distributions and Histograms – Ogives and Other Creatures The graph below displays the cumulative frequency of the lengths of phone calls made from the mathematics department office at Gabalot High. Length of Phone Calls 40 35 30 Frequency 25 20 15 10 5 0 0 6 12 18 24 30 36 42 Phone Calls (minutes) a. How many phone calls were made from the Gabalot High math office this month? b. Estimate the median length of a phone call. c. What percentage of phone calls lasted more than 30 minutes? d. Construct a boxplot that represents the length of phone calls data. e. Make a frequency table for the length of phone calls data. f. Plot a histogram of this data. g. Describe the distribution of lengths of phone calls made from the math department offices. h. Construct a frequency polygon for this data on the same axes as your histogram.
Pages to are hidden for
"Beyond Frequency Distributions and Histograms � Ogives and Other "Please download to view full document