The means and standard deviations of heights ans weights of 50 students of a class are as follows:   Weights Heights Mean 63.2 kg 63.2 inch Standard deviation 5.6 kg 11.5 inch Which shows more variability, heights or weights?

The standard deviation of 7 scores 1,2,3,4,5,6,7 is

If standard deviation of the numbers 2,3,2x and 11 is 3.5, then the possible values of x are

Find the variance and standard deviation of the following data 5,12,3,18,6,8,2,10

If the mean of 100 observations is 50 and their standard deviations is 5,than the sum of all squares of all the observations is

If the mean of 100 observations is 50 and their standard deviations is 5,than the sum of all squares of all the observations is

The mean and standard deviation of marks obtained by 50 students of a class in there subjects, mathematics, physics and chemistry are given below: Subject Mathematics Physics Chemistry Mean 42 32 40.9 Standard Deviation 12 15 20 Which of the three subjects shows the highest variability in marks and which shows the lowest?

The following values are calculated in respect of heights and weights of the students of a section of class XI: Height Weight Mean 162.6 cm 52.36 kg Variance 127.69cm2 23.1361 kg2 Can we say that the weights show greater variation than the heights?

The mean and standard deviation of marks obtained by 50 students of a class in three subjects, Mathematics, Physics and Chemistry are given below: Which of the three subjects shows the highest variability in marks and which shows the lowest?

The mean and standard deviation of 100 observations were calculated as 40 and 5.1 respectively by a student who took by mistake 50 instead of 40 for one observation. What are the correct mean and standard deviation?

The mean and standard deviation of 100 observations were calculated as 40 and 5.1 respectively by a student who took by mistake 50 instead of 40 for one observation. What are the correct mean and standard deviation?