Q. The sum of the squares of the deviations of the values of a variable is least when the deviations are measured from: Harmonic mean Geometric mean Median Arithmetic mean Answer: Arithmetic mean

Q. The sum of the squares of the deviations about mean is: Zero Maximum Minimum All of the above Answer: Minimum

Q. The elimination of extreme scores at the top of the set has the effect of: Lowering the mean Raising the mean No effect Difficult to tell Answer: Lowering the mean

Q. The elimination of extreme scores at the bottom of the set has the effect of: Lowering the mean Raising the mean No effect None of the above Answer: Raising the mean

Q. If a constant value is added to every observation of data, then arithmetic mean is obtained by: Subtracting the constant Adding the constant Multiplying the constant Dividing the constant Answer: Adding the constant

Q. The population mean µ is called: Discrete variable Continuous variable Parameter Sampling unit Answer: Parameter

Q. The measure of central tendency listed below is: The raw score The mean The range Standard deviation Answer: The mean

Q. While computing the arithmetic mean of a frequency distribution, the each value of a class is considered equal to: Class mark Lower limit Upper limit Lower class boundary Answer: Lower limit

Q. Scores that differ greatly from the measures of central tendency are called: Raw scores The best scores Extreme scores None of the above Answer: Extreme scores

Q. Any measure indicating the centre of a set of data, arranged in an increasing or decreasing order of magnitude, is called a measure of: Skewness Symmetry Central tendency Dispersion Answer: Central tendency