Question 21. In arithmetic mean, the sum of deviations of all the recorded observations must always be

Question 22. The distribution whose outliers are higher values is considered as

Question 23. The arithmetic mean is 25 and all the sum of observations is 350 then the number of observations are

Question 24. Considering all the observations of arithmetic mean, the sum of squares of deviations must be less than

Question 25. In a set of observations, the unusual lower and higher values are called

Question 26. The product W has per unit contribution of 8 with sold quantity of 124 units, the product X has per unit contribution of 5 with the sold quantity of 105 units, product Y has per unit contribution of 9 with sold quantity of 135 units, product Z has per unit contribution of 12 with sold quantity of 140 units then the weighted average mean is

Question 27. In the measure of central tendency, the population parameter is denoted by

Question 28. The service time (in minutes) at airport ticket counter is as 4.5, 5.5, 6, 7, 8, 8.5, 4, 3, 3.5, 2.5, 3.8 then the median of the data is

Question 29. The per day wage of 15 employees of different departments is as 620, 640, 750, 850, 650, 720, 730, 785, 630, 740, 900, 880, 780, 690, 850 then the value of x̅ is

Question 30. The number of observations are 24 and value of x̅ is 28 then the sum of all the values is