STATISTICS
HIGH ORDER THINKING QUESTIONS
1. What measure of central tendency is used to obtain graphically as the xcoordinate of meeting point of the two ogives for grouped data?
2. The percentage marks obtained by 100 students in an examination are given below: Find median.
Marks 
3035 
3540 
4045 
4550 
5055 
5560 
6065 
Frequency 
10 
16 
18 
23 
18 
8 
7 
3. The median of the following frequency distribution is 35. Find the value of x.
C.I. 
f 
010 
2 
1020 
3 
2030 
X 
3040 
6 
4050 
5 
5060 
3 
6070 
2 


Also find the modal class.
4. Draw the cumulative frequency curve by more than method from the following data:
income 
Number of persons 
01000 
7 
10002000 
15 
20003000 
35 
30004000 
28 
40005000 
10 
50006000 
5 
5. The mean of the following distribution is 18.
Class interval 
1113 
1315 
1517 
1719 
1921 
2123 
2325 
Frequencies 
3 
6 
9 
13 
f 
5 
4 
6. The percentage of marks obtained by 100 students in an examination are given below:
Marks 
3035 
3540 
4045 
4550 
5055 
5560 
6065 
Frequency 
14 
16 
18 
23 
18 
8 
3 
Find the median of the above data.
7. Draw a ‘less than ogive’ for the following data:
Class 
14 
47 
710 
1013 
1316 
1619 
Frequency 
6 
30 
40 
16 
4 
4 
8. Find the mean, median and the mode of the following frequency distribution.
Class 
010 
1020 
2030 
3040 
4050 
5060 
6070 
frequency 
4 
5 
7 
10 
12 
8 
4 
9. Find the mean of the following
Class 
200201 
201202 
202203 
203204 
204205 
205206 
frequency 
13 
27 
18 
10 
1 
1 
10. Find the mean of the following data:
Class 
010 
1020 
2030 
3040 
4050 
frequency 
20 
24 
40 
36 
20 