Consider the following statements with regard to correlation coefficient r between random variables x and y : 1. r = +1 or –1 means there is a linear relation between x and y. 2. –1 ≤ r ≤ 1 and r² is a measure of the linear relationship between the variables. Which of the statements given above is/are correct?

For election to the Lok Sabha, a nomination paper can be filed by

Miscellaneous · Easy

In a month if the seventh day is three days earlier than Saturday,then the nineteenth day of the month will be a

Miscellaneous · Easy

Which among the following events happened earliest ?

Miscellaneous · Easy

An 80-litre solution of alcohol and water has 75% alcohol. How much water (in litres) must be added to bring down the concentration of alcohol to 60%?

Miscellaneous · Easy