Q1 of 141 Page 8

Which of the following is not a measure of central tendency?

There are three measures of central tendency


1) Mean 2) Median 3) Mode

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11

Find the class marks of classes 10-25 and 35-55

 12

Write the median class of the following distribution:























Classes:



0-10



10-20



20-30



30-40



40-50



50-60



60-70



Frequency:



4



4



8



10



12



8



4


 2

The algebraic sum of the deviations of a frequency distribution from its mean is

 3

The arithmetic mean of 1, 2, 3, ..., n is