What is the range?4 , -1 , -3 , 4 , 3 , -3 , 9 , -3
6
7
8
12
The mean and median of a data are 14 and 15 respectively. The value of mode is
16
17
13
18
If a data set has an even number of observations, the median
is the average value of the two middle items
must be equal to the mean
cannot be determined
is the average value of the two middle items when all the items are arranged in ascending order
The difference between the largest and the smallest data value is the
Variance
Mean
Range
Mode
Which of the following is not a measure of central tendency?
Median
Standard deviation
A data has 25 observations (arranged in descending order ) which observation represents the median?
12th
13th
14th
15th
The arithmetic mean of first n natural number is
n/2
n/2 + 1
(n + 1)/2
(n -1)/2
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
The average age of 5 students is 60 years then their total age =
300
250
200
400
__________ is defined as the number corresponding to the cumulative frequency equal to half the total frequency.
