Car Model Years. The dotplot in Figure 9 represents the model year for a sample of cars in a used car lot. Refer to the dotplot for Exercises 77–79.

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Figure 3.9: FIGURE 9 Dotplot of model year.

Question 3.78

78. Calculate a new statistic “age of the car in 2015” as follows: take the model year and subtract it from 2015.

  1. Find the mode of the car ages.
  2. Find the mean and median of the car ages.