Mode of a group of observations

The arithmetic mean , the mode and the median of a group of 75 observations were calculate to be 27, 34 and 29 respectively. It was later discovered that one observation was wrongly read as 43 instead of the correct value 53. Examine to what extent the calculate values of the averages will be affected by the error.

MODE Mode of a set of observations is the value of the observation that occurs most frequently.

Out of 250 observations, the first 100 observations have mean 5 and the average of the remaining 150 observations is 25/3 What is the average of the whole group of observations ?

A group of 10 observations has mean 5 and 2sqrt(6) another group of 20 observationshas mean 5 and S.D.3sqrt(2) ,then the S.D.ofcombined group of 30 observations is

Is there any change in mode, if one or two or more observations, equal to mode are included in the data?

The median of 19 observations of a group is 30. If two observations with values 8 and 32 are further included,then the median of thenew group of 21 observation will be

If the combined mean of two groups is (40)/(3) and if the mean of one group with 10 observations is 15 then the mean of the other group with 8 observations is equal to

If the combined mean of the two group is 40/(3) and if the mean of one group with 10 observations is 15, then the mean of the other group with 8 observations is a) 46/(3) b) 35/(4) c) 45/(4) d) 41/(4)