Correlation — Economics STD 11 Commerce — Question

Selection of base year is one problem in constructing index number. (True/ False)

Buying and selling are the economic activities. (True/ False)

State whether the following statements are True or False.
Data collected by investigator is called the secondary data.

State whether the following statements are True or False.
Non-sampling errors can be minimised by taking large samples.

Answer the following questions, choosing the correct answer:
Median of a frequency distribution cannot be known from the ogives. (True/ False)

Mean Deviation is capable for further algebraic treatment. (True/ False)

The sum of absolute deviation is minimum when taken from Arithmetic mean. (True/ False)

C.F. is used for cumulative frequency. (True/ False)

Best possible use of statistics data make by only expert. (True/ False)

Comment whether the following statements are true or false.
The sum of deviation of items from median is zero.