Laspeyres price index is 115 and Paasche price index is 110. The Bowley index (arithmetic mean of L and P) is approximately: MCQ with Answer and Explanation

Explanation:
Consistency checks ensure no calculated frequency (e.g., from marginal totals) is negative, as counts cannot be negative; all must be non-negative integers for logical validity.

Explanation:
Mailed questionnaires suffer from high non-response as respondents often ignore or forget to return them.

Explanation:
Yule's Q = 0 when (AB)(αβ) = (Aβ)(αB), which is the condition for statistical independence between attributes A and B in a 2×2 table.