120 psychology students took a standardized test. The scores are summarized in the GFDT below. Scores 180-199 200-219 220-239 240-259 260-279 280-299 Frequency 12 Scores less than 200 less than 220 less than 240 less than 260 less than 280 less than 300 13 answer= 15 The scores are also described in the cumulative table shown below. 15 17 Frequency 12 25 40 72 120 What is the missing value in the cumulative GFDT?

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