Q. Which of the following is not a disadvantage of using mean? It is affected by extreme valuesIt cannot be computed in grouped data with open-ended class intervalsIt does not possess the desired algebraic propertyNone of the above Answer: It does not possess the desired algebraic property

Q. The geometric mean and harmonic mean of two values are. 8 and 16 respectively, then arithmetic mean of values is: 41624128 Answer: 16

Q. The averages are affected by change of: OriginScaleBoth (a) and (b)None of the above Answer: Both (a) and (b)

Q. Which pair of averages cannot be calculated when one of numbers in the series is zero? Geometric mean and MedianHarmonic mean and ModeSimple mean and Weighted meanGeometric mean and Harmonic mean Answer: Geometric mean and Harmonic mean

Q. For an open-end frequency distribution, it is not possible to find: Arithmetic meanGeometric meanHarmonic meanAll of the above Answer: All of the above

Q. Harmonic mean gives less weightage to: Small valuesLarge valuesPositive valuesNegative values Answer: Large values

Q. The ratio among the number of items and the sum of reciprocals of items is called: Arithmetic meanGeometric meanHarmonic meanMode Answer: Harmonic mean

Q. If the two observations are a = 2 and b = -2, then their geometric mean will be: ZeroInfinityImpossibleNegative Answer: Impossible

Q. Geometric mean is suitable when the values are given as: ProportionsRatiosPercentage ratesAll of the above Answer: All of the above

Q. Taking the relevant root of the product of all non-zero and positive values are called: Arithmetic meanGeometric meanHarmonic meanCombined mean Answer: Geometric mean

Q. If a set of data has one mode and its value is less than mean, then the distribution is called: Positively skewedNegatively skewedSymmetricalNormal Answer: Positively skewed

Q. The sum of the deviations taken from mean is: Always equal to zeroSome times equal to zeroNever equal to zeroLess than zero Answer: Less than zero