Consider data
, then
Σ fi =
50
51
52
53
The width of a rectangle in a histogram represents
mid values of the class
class interval
frequency of the class
numbers of class
Which of the following is not a measure of central tendency?
Median
Standard deviation
Mean
Mode
For any collection of n items,
∑x
n
0
For the following frequency distribution
the sum of upper limit of the median class and the lower limit of the modal class is
90
100
95
85
For the following distribution
the modal class is
20 - 30
30 - 40
40 - 50
50 - 60
The mean and median of a data are 14 and 15 respectively.The value of mode is
16
17
13
18
The measure of central tendency which can't be found graphically is
None of these
The median class of the following distribution is
The formula is used to determine
All the three above
