Discussion

Match the following :

List I	List II
(a) X and Y-axis	(i) Degree of freedom
(b) Mode	(ii) Difference between highest and lowest values
(c) Chi-square	(iii) Bar chart
(d) Range	(iv) Central tendency

Answer: B

The correct matching is (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii).

X and Y axes: a bar chart is drawn on two axes, categories on one and values on the other.
Mode: a measure of central tendency, the most frequent value.
Chi-square: its sampling distribution depends on the degrees of freedom.
Range: the difference between the highest and lowest values.

The third option swaps chi-square and range, and the others pair mode with something other than central tendency.

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