TABLE 2-5
A survey was conducted to determine how people rated the quality of programming available on television. Respondents were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality). The stem-and-leaf display of the data is shown below.
8

-Referring to Table 2-5, what percentage of the respondents rated overall television quality with a rating of 50 or below?
A) 11
B) 40
C) 44
D) 56

Question

TABLE 2-5
A survey was conducted to determine how people rated the quality of programming available on television. Respondents were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality). The stem-and-leaf display of the data is shown below.
  8
 
-Referring to Table 2-5, what percentage of the respondents rated overall television quality with a rating of 50 or below?
A) 11 
B) 40 
C) 44 
D) 56

Quizplus · Accepted Answer

The stem-and-leaf plot shows that there are 25 values in total. The values range from 16 to 94. The stem values range from 0 to 9, with each stem representing ten units (i.e. the first stem "0|" represents values from 0-9, the second stem "1|" represents values from 10-19, and so on). Looking at the plot, we can see that there are 11 values that fall within the range of 0-50 (i.e. stems 0-5). To find the percentage of respondents who rated overall television quality with a rating of 50 or below, we divide 11 by 25 and multiply by 100: (11/25)*100 = 44. Therefore, the answer is C.

TABLE 2-5 a Survey Was Conducted to Determine How People Rated the Rated