If the mean of 10 numbers is 15, and one number is removed making the new mean 14, the removed number is: MCQ with Answer and Explanation

Explanation:
CPI tracks the average price change over time for a representative basket of goods and services purchased by households, serving as the main gauge of consumer inflation.

Explanation:
Laspeyres and Paasche indices fail the time reversal test; Fisher's index satisfies it.

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.