WSC STATSTICS

The difference between the highest and lowest value of the variable in the given data is called ....................................
Class limit
Frequency
Class inverval
Range
The runs scored by a cricketer in a various test are 16,65,97,78,49,23,48,59,98,36.The range for this data is................
98
82
16
50
The lower limit of the class interval 40-50 is..............
50
45
40
39
The upper limit of the class 20-30 is............
30
25
19
20
Which one of the following is the tally marks of frequence 6 ?
iiii i
iii iii
iiiii i
iiii i
The length of the class intervals 0-9,10-19,20-29.......... Is..........
10
9
0
19
The mid value of a class intervel is called..............
class mark
class limit
range
median
Find the mean height of a group of 8 trainees whose heights in cm are 156,162,160,172,154,164,162,170.............
162.5
172
170
156
The aruthmetic mean of a,a-3,a+4,a-5 and a-1,is 6.Find the value of a
2.2
5
7
6
The average maks of 50 trainees in a trade test is 61 and the average marks of 30 trainees is 72.Find the average of the remaining 20 trainees.
61
50
72
44.5
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