Multiple choice

The marks of 10 students in a certain subject in a class are 20, 19, 50, 48, 50, 36, 35, 50, 40, 40 The mean and mode are respectively as .............

  1. Mean =38.8, Mode = 50

  2. Mean = 40, Mode= 35 

  3. Mean = 30, Mode= 33 

  4. Mean = 35, Mode= 25 
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A Correct answer
Explanation

The mean is the sum of all values divided by the count: (20+19+50+48+50+36+35+50+40+40) / 10 = 388 / 10 = 38.8. The mode is the value that appears most frequently, which is 50 (appearing 3 times).

AI explanation

To find the mean, add all the marks: 20 + 19 + 50 + 48 + 50 + 36 + 35 + 50 + 40 + 40 equals 388, and dividing by 10 gives 38.8. The mode is the value that appears most frequently in the data set, and since the mark 50 appears three times, it is the mode. The mean and mode are 38.8 and 50, respectively.

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