The arithmetic mean ________ by 10 if 10 is added to all values?

Which of the following is not based on all the observations?

Data arranging into rows and columns are called________?

This index measure the change from month to month in the cost of a representative ‘basket’ of goods and services of the type bought by a typical household?

There are ________ important bases of classification?

A ________ is a heading at the top of the table describing its contents?