The arithmetic mean is 12 and the number of observations are 20 then the sum of all the values is

Related MCQs

• The mean of 10 observations is 10. All the observations are increased by 10%. The mean of increased observations will be:
• The sum of deviations of observations from their arithmetic mean:
• The arithmetic mean of the marks obtained by 50 students was calculated as 44. It was later discovered that a score of 36 was misread as 56. Find the correct value of arithmetic mean of the marks obtained by the students.
• In a bivariate sample, the sum of squares of differences between marks of observed values of two variables is 33 and the rank correlation between them is 0.8. Find the number of pairs of observations:
• The sum of the squares of the deviations of the variable is when taken about arithmetic mean
• The sum of all the squared deviations is divided by the total number of observations to calculate
• If the arithmetic mean is multiplied to coefficient of variation then the resulting value is classified as
• If mean absolute deviation of set of observations is 8.5 then value of quartile deviation is
• For a distribution of data, if the arithmetic mean> median>mode, then which of the following is true?
• In a moderately skewed distribution, the value of mode is 120 and that of median is 140. Find the value of arithmetic mean.