Solve. If necessary, round answers to the nearest hundredth.
-The following test scores were recorded for a student: 98, 55, 96, 55, 81. Find the mean, median, and mode.
A)mean: 77 median: 81 mode: 98
B)mean: 77 median: 81 mode: 55
C)mean: 82.5 median: 96 mode: 98
D)mean: 96.3 median: 88.5 mode: 55

Question

Quizplus · Accepted Answer

- Mean: add up all the scores and divide by the number of scores: ($98+55+96+55+81$)/5 = 77. 
- Median: order the scores from lowest to highest and find the middle value: $55, 55, 81, 96, 98$. The middle value is 81. 
- Mode: the score that appears most frequently is 55. Therefore, the best choice is B, which matches with the calculated values of mean, median, and mode. Mean = Sum of all scores / Total number of scores 
    = (98+55+96+55+81) / 5 
    = 77

Median = Middle value when the scores are arranged in order 
        = 55, 55, 81, 96, 98  
        = 81

Mode = Most frequently occurring value 
       = 55

Therefore, the correct choice is B.

Solve If Necessary, Round Answers to the Nearest Hundredth