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

Q. For moderately skewed distribution, the value of mode is calculated as: 2Mean 3Median3Median 2Mean2Mean + Mode3Median - Mode Answer: 3Median 2Mean

Q. A distribution with two modes is called: UnimodelBimodalMultimodalNormal Answer: Bimodal

Q. Extreme scores on an examination have the following effect on the mode: They tend to raise itthey tend to lower itThey have no effect on itdifficult to tell Answer: They have no effect on it

Q. Suitable average for averaging the shoe sizes for children is: MeanModeMedianGeometric mean Answer: Mode

Q. The mode or model value of the distribution is that value of the variate for which frequency is: MinimumMaximumOdd numberEven number Answer: Maximum

Q. The middle value of an ordered series is called Median5th decile50th percentileAll the above Answer: All the above

Q. The values of the variate that divide a set of data into four equal parts after arranging the observations in ascending order of magnitude are called: QuartilesDecilesPercentilesDifficult to tell Answer: Quartiles

Q. We must arrange the data before calculating: MeanMedianModeGeometric mean Answer: Median

Q. Extreme scores will have the following effect on the median of an examination: They may have no effect on itThey may tend to raise itThey may tend to lower itNone of the above Answer: They may have no effect on it

Q. The first step in calculating the median of a discrete variable is to determine the: Cumulative frequenciesRelative weightsRelative frequenciesArray Answer: Array