Review Time

The following double bar graph shows the income and expenditure in crores of rupees of a supermarket from $2008-2012$.

If the net profit or loss over the years $₹k$ crores, then find the value of $k$.

Choose the correct option:

The measure of central tendency which shows the highest number of occurrence of a data observation to represent a class is _____.

The mean of $68, 76,72 ,74$ and $70$ is _____.

The measure of central tendency used to divide the data into two groups is _____.

The number of times an observation occurs in a data is called its _____.

To compare two given sets of data, we can conveniently use _____.

How many elements are there in the sample space of an experiment when three dice are rolled simultaneously?

Choose the correct option:

The numbers $2, 3$ and $4$ repeat as many times as their value. The mode and median of the observations are _____ .