Given the following set of data , what is the range?
[12 , 23 , 35 , 54 , 21 , 8 , 9 , 67 ]
55
59
8
56
Which of the following is not a measure of central tendency?
Median
Standard deviation
Mean
Mode
The middle most observation of a statistical data when they are arranged in ascending order is called
Range
None of these
The arithmetic mean =
Sum of observations × Number of observations
Product of observations ÷ Number of observations
Sum of observations ÷ Number of observations
Sum of observation - Number of observations
What is the range?4 , -1 , -3 , 4 , 3 , -3 , 9 , -3
6
7
12
The difference between the largest and the smallest data value is the
Variance
What is the median?
1 , 5 , 3 , 7 , 10 , 5 , 4.
5
10
Consider data
50
51
52
53
A.M for the following observation
32 , 267 , 321 , 157 , 33 , 254 , 166 , 132 , 289 , 349 is
267
321
157
200
The arithmetic mean of first n natural number is
n/2
n/2 + 1
(n + 1)/2
(n -1)/2
