Question

Table 2.23 gives the results of the J.D. Power initial quality study of 2014 automobiles. Each model is rated on overall mechanical quality and overall design quality on a scale from "among the best" to "the rest" -see the scoring legend at the bottom of the table. (a) Develop a frequency distribution of the overall mechanical quality ratings. (Leave no cells blank - be certain to enter "O" wherever required. Round your percent answers to 1 decimal place.) Mtg Rating Frequency Total

Answer 1

The 2 ratings are pointed by red line , so # of red lines = 6

The 3 ratings are pointed by green line, so # of green lines = 16

The 4 ratings are pointed by Yellow line , so # of yellow lines = 9

The 5 ratings are pointed by blue line ,so # of blue lines = 1

Therefore frequency distribution is :