Measures of Central Tendency — Economics STD 11 Commerce — Question

“Less than” Ogive rises downward to the right. (True/ False)

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

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

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

The range of simple correlation coefficient is minus one to plus one. (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.
There is a certain bias involved in the non-random selection of samples.

State whether the following statements are True or False.
Telephone survey is the most suitable method of collecting data, when the population is literate and spread over a large area.

In unweighted index, different items are given unequal importance. (True/ False)

Head note is the last part of the table. (True/ False)