Mathematics
If the mean of 7, 5, 13, x and 9 be 10, then the value of x is :
10
12
14
16
Measures of Central Tendency
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Answer
By formula,
Hence, option 4 is the correct option.
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Which of the following is not a measure of central tendency?
Mean
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The mean of the following data is : 34, 89, 37, 144, 78, 240, 128, 98
102
104
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In a monthly test, the marks obtained in Mathematics by 16 students of a class are as follows :
0, 0, 2, 2, 3, 3, 3, 4, 5, 5, 5, 5, 6, 6, 7, 8
The arithmetic mean of the marks obtained is :
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Out of 100 numbers, 20 were 4s, 40 were 5s, 30 were 6s and the remaining were 7s. The mean of the numbers is :
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