Q9 of 69 Page 6

Find the arithmetic mean of the following distribution:


Now,


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7

The mean of 25 observations is 36. If the mean of the first 13 observations is 32 and that of the last 13 observations is 39, find the 13th observation.

 8

If the mean of the following data is 25, find the value of k.

 10

The mean of the following frequency distribution is 62.8. Find the missing frequency x:

 11

The arithmetic mean of the following data is 14. Find the value of p: