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

Q. A curve that tails off to the right end is called: Positively skewedNegatively skewedSymmetricalBoth (b) and (c) Answer: Positively skewed

Q. If the values of mean, median and mode coincide in a unimodel distribution, then the distribution will be: Skewed to the leftSkewed to the rightMultimodalSymmetrical Answer: Symmetrical