The year for which we calculate the cost of living index is referred as ___ year.

Calculate the cost of living index for the following data:

Calculate the cost of living index number from the following group data:

When the year 2000 is taken as the base year, the cost of living index is increased by 20% from 2006 to 2007. If the total expenditure in the base year is Rs. 20,000, and the cost of living index of 2007 is 210, then the total expenditures (in Rs.) in the years 2006 and 2007 are____.

Calculate the Cost of Living Index from the following data:

Calculate the Cost of Living Index Number for the following data.

Draw a histogram and a frequency polygon in represent the following data, which shows the montly cost of living index of a city in a period of 2 years

A shopkeeper sold certain articles. Cost price of each article and the number of articles sold are given below. Calculate the cost of libing index for the year 2006 taking 1999 as the base year (approximately).

The total expenditure of a family 2003 was Rs. 15,000. Taking this year as the base year, the cost of living index in 2007 and 2008 were cacluated. The cost of living index 2008 were calculated. The cost of living index 2008 was 25% more than that in 2007. The cost of living index in 2008 was 160. Find the total expenditure of the family in 2007. (in Rs.)