Directions : In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): Combined mean is calculated by multiplying the means with their respective frequencies total and then added and divided by the total number of items.
Reason (R): In weighted mean, the weights are assigned to the respective items in the series and then the mean is calculated.
Directions : In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): For calculating Arithmetic mean, when Cumulative frequencies are given, the frequencies are to be found for the given series or variables.
Reason (R): Cumulative frequencies are calculated by adding the frequencies.
Directions : In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): Arithmetic mean is affected by the extreme values.
Reason (R): All the values are considered while calculating the mean and so if there are more big values or small values it will affect the calculation of the mean.
Directions : In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): While calculating Median of the series, the terms need to be arranged in either ascending order or descending order.
Reason (R): In median, the central term is to be found which divides the series into two equal parts.
Directions : In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): Median is a positional average.
Reason (R): Median is the centre most item in a series arranged in either ascending order or descending order.
Directions : In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): Rahim calculated the value of median to be 16 in the series, 5, 8, 15, 16, 25, 45, 80. He used the formula of odd numbers in this case.
Reason (R): Median for odd series is calculated by the formula ( n + 1 )/2^{th} term.
Directions : In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): Mode is dependent on frequencies.
Reason (R): Mode has very little effect on marginal units.
Directions : In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): Mode of a series 2, 4, 2, 5, 6, 2, 3, 8, 9, 2, 5, 10 is 2.
Reason (R): Mode of a set of observations is that value which occurs the greatest number of times, i.e., with the highest frequency in a series.
Directions : In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): Mode is affected by the extreme values.
Reason (R): In mode, total cannot be obtained.
Directions : In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): Mean deviation is calculated in three different ways, namely mean deviation about mean, mean deviation about median and mean deviation about mode.
Reason (R): There are three measures of central tendency that are mean, mode and median.
Directions : In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): A good measure of dispersion needs to be least affected by change in the sampling.
Reason (R): Standard deviation is the best measure of dispersion.
Standard deviation (SD) is the most commonly used measure of dispersion. It is a measure of spread of data about the mean.
Directions : In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): Standard Deviation is the best measure of dispersion.
Reason (R): Standard deviation is not based on all the items and is very easy to calculate.
Directions : In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): Less than or more than ogive can be used to calculate correlation.
Reason (R): When changes in two related variables are in the same ratio, then it is a case of perfect correlation.
Directions : In the following questions, a stateme
Assertion (A): Scatter Diagram method is a graphic expression of the degree and direction or absence of correlation.
Reason (R): Scatter Diagram method fails to produce definite trend.
Directions : In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
Assertion (A): When correlation coefficient (r) is between +0.75 and +1, high degree of positive correlation and when it is between –0.75 to –1 high degree of negative correlation.
Reason (R): The value of correlation lies between + 1 and – 1.
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