In a school, the total number of students from class VII to X is 1080, as shown in the pie graph . How many students are there in total in class IX and X?
405
Total angle in pie chart = 360° corresponds to 1080 students, so 1° corresponds to 1080/360 = 3 students.
Class IX + Class X angle = 75° + 60° = 135°.
Number of students = 135 × 3 = 405. Answer: (B).
Important Questions from Classification of Data
In an examination, 40% of candidates got second class. When the data are represented by a pie chart, what is the angle corresponding to second class?
Following histogram shows certain frequency distribution against class intervals.
The approximated mean of this distribution is:
The annual vehicles production (in lacs) in india is given in the pie chart.
If the annual production of motor cycle is 1.80 lacs, the annual production of Bicycle is
For determination of mode and median graphically, one considers:
The curve obtained by joining the points, whose x-coordinates are the upper limits of the class interval and y-coordinates are corresponding cumulative frequencies is called:
