Related InterviewSolutions

• What is statistical average? What desirable properties should an average possess?
• State four demerits of arithmetic mean.
• Give the four objective of statistical average.
• State four merits of arithmetic mean.
• If the average salary of a firm is Rs. 400 and the number of workers is 60, find the total salary bill of the firm.
• Mean of 100 observations is found to be 40. If at the time of computation two items are wrongly taken as 30 and 27 instead of 3 and 72, find the correct mean.
• Formula for finding arithmetic mean is:A. `barX = sum X`B. `barX = (sumX)/N`C. `barX = sum X-N`D. `barX = N/(sumX)`
• The average marks of 39 students of a class is 50. The marks obtained by 40th student are 39 more than the average marks of all the 40 student are 39 more than the average marks of all the 40 students. Find the mean marks of all the 40 students.
• If a given number is subtracted from all the items in a series, then the arithmetic mean of that series will increase by the same specific value.
• Which of the following is a type of mathematical average?A. MedianB. Partition valueC. ModeD. None of these