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Histograms – Mixed Practice Name: 1) The test scores for a class of 20 students are as follows: 93, 84, 97, 98, 100, 78, 86, 100, 78, 86, 100, 85, 92, 72, 55, 91, 90, 75, 94, 83, 60, 81, 95. a) Complete the frequency table below. Test Scores Tally Frequency 91-100 b) Find the modal interval. 81-90 71-80 61-70 c) Find the interval that contains the median. 51-60 2) The scores of the teams in a local bowling league are listed in the chart below. Teams Aces 186 224 216 207 Bees 177 207 235 223 Cubs 199 212 188 239 Darts 197 196 226 205 Experts 193 214 231 200 A. Create the frequency table and cumulative frequency table for the bowling scores. Interval Tally Frequency Interval Cumulative Frequency 170-184 185-199 200-214 215-229 230-244 B. What is the mean, median, mode, and range of the 20 bowling scores listed? mean = ___________ median = _______________mode = ____________ range = ____________ C. Find the median interval = _______________ and the modal interval(s) = ________________ D. Construct a histogram and cumulative histogram using the data in the tables from the previous page Label, Label, Label! Make sure you skip a box if your data does not start with a 0. Histogram Cumulative Histogram 3) For what value of x will 8 and x have the same mean (average) as 27 and 5? 4) A jar contains 5 blue marbles, 3 red marbles, and 4 green marbles. You reach in and pick one marble from the jar, keep it, and then pick another marble. Find the following probabilities: a. P(blue, blue): b. P(red, red): c. P(red, green): d. P(not red, not red): 5) Solve for x: x 1 x (Hint: product of means = product of extremes) Check your answer. 2 3