The following bar graph (Fig. 23.14) represents the heights (in cm) of 50 students of Class XI of a particular school. Study the graph and answer the following questions:
State whether true or false:
There are 29 students in the class whose heights are in the range of 145-154 cm.
Correct option is A. True
The number of students whose heights are in the range of $$145-149=12$$The number of students whose heights are in the range of $$150-154=17$$
$$\therefore$$ The number of students whose heights are in the range of $$145-154=12+17=29$$$$\therefore$$ The given statement is true.
State whether true or false:
There are 29 students in the class whose heights are in the range of 145-154 cm.
State whether true or false:
The number of students in the class having their heights less than 150 cm is 12.
State true or false:
Number of students with maximum height (in cm) in the class is $$17$$.
What percentage of the total number of students have their heights more than 149 cm?
The following bar graph represents the heights (in cm) of 50 students of Class XI of a particular school. Study the graph and answer the following questions:
(i) What percentage of the total numbe students have their heights more than cm?
(ii) How many students in the class are in range of maximum height of the class?
(iii) The school wants to provide a partictilai type of tonic to each student below he height of 150 CM to improve his height the cost of the tonic for each student comes out to be Rs. 55, how much amount o money is required?
(iv) How many students are in the range shortest height of the class?
(v) State whether true or false:
(a) There are 9 students in the class whose heights are in the range of 155-159 cm.
(b) Maximum height (in cm) of a student the class is 17.
(c) There are 29 students in the class whose heights are in the range of 145-154 cm.
(d) Minimum height (in cm) of a student is the class is in the range of 140-144 cms.
(e)The number of students in the class havin their heights less than 150 cm is 12.
(f) There are 14 students each of whom has height more than 154 cm.