The range of the following data is 21, 6, 7, 9, 4, 8, 13, 19.
7
15
13
17
If a data set has an even number of observation, the median ______.
Can not be determined
Is the average value of the two middle items
Must be equal to the mean
None of the above
The marks in science of 13 students are 31, 37, 29, 41, 35, 35, 38, 36, 35, 38, 32,29, 43 Then their mean mark is
35.30
36
37
40
The mode of the following data is 20, 30, 68, 32, 55
20
30
32
None of these
Which of the following is not a measure of central tendency ?
Mean
Median
Variance
Mode
Mean = ______.
Sum of all observations + Total Number of observations
Sum of all observations - Total Number of observations
Sum of all observations × Total number of observations
An outcome of a random experiment is called a/an _______.
Sample space
Event
Data
Probability
The most common value in a data is the ______ of the data.
The median of the following data is 2, 4, 5, 2, 6, 7, 4
4
2
6
A coin is tossed once, the probability of getting a tail is ________.
0
1
1/2
1/4
