In a small city, the forest department tried conducting a survey for two types of trees in the years 2005, 2008 and 2011. The data obtained is shown below in the bar graph.

The number of pine trees in 2005, 2008 and 2011 is always increasing. True or False

Q.

In a small city, the forest department tried conducting a survey for two types of trees in the years 2005, 2008 and 2011. The data obtained is shown below in the bar graph.

The year in which the number of pine trees is more than the number of oak trees is

Q.

The forest department conducted a survey for two types of trees oak and pine in the years 2005, 2008 and 2011. The data obtained is shown below.

The year in which the no. of pine trees is more than oak trees is:

Q. The heights of trees in a forest are given as follows. Draw a histogram to represent the data.

Heights in metre	$16-20$	$21-25$	$26-30$	$31-35$	$36-40$	$41-45$	$46-50$	$51-55$
Number of trees	$10$	$15$	$25$	$30$	$30$	$50$	$35$	$20$

Q. A survey is conducted to count the number of different types of trees in a forest, for which a code is written on each tree. Which of the following gives the missing term in the given pattern of codes?

A11, A22, A33, ?, A55

Q. Draw histogram and frequency polygon on the same graph paper for the following frequency distribution.

Class	Frequency
$15-20$	$20$
$20-25$	$30$
$25-30$	$50$
$30-35$	$40$
$35-40$	$25$
$40-45$	$10$