(x) 53, 75, 42 and 70 are marks obtained by 4 students in Statistics.
Mean of their marks is
(a) 42
(b) 64 (c) 60
(d) 56
Answers
Answered by
1
Solution!!
The concept of mean has to be used here. The marks obtained by 4 students are given in the question. We have to find the mean of their marks.
Observations → 53, 75, 42 and 70
Number of observations = 4
Mean = Sum of observations ÷ Total number of observations
Mean = (53 + 75 + 42 + 70) ÷ 4
Mean = 240 ÷ 4
Mean = 60
Hence, the mean of the marks of the students is 60.
(c) 60 is the correct answer.
In simple words, mean is the average of the numbers. We add up all the numbers and divide by the number of numbers.
Similar questions