The daily sale of Kerosene (in litres ) in a ration shop for six days is as follows :
75 , 120 , 12 , 50 , 70.5 and 140.5. The average daily sale is
150
10
142
78
The mean of 10 observations is 25. If one observation , namely 25 , is deleted , the new mean is
25
20
28
22
Mean =
Sum of observations × Number of observations
Sum of observations + Number of observations
Sum of observations - Number of observations
In which subject is the student poor?
English
Mathematics
Science
History
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
Mean
Median
Mode
None of these
The weight (in kg) of 5 men are 62 , 65 , 69 , 66 and 61. The median is
45 kg
66 kg
65 kg
55 kg
A data has 25 observations (arranged in descending order).Which observation represents the median?
12th
13th
14th
15th
The mean of x , x + 3 , x + 6 , x + 9 and x + 12 is
x + 6
x + 3
x + 9
x + 12
Which of the following is not a measure of central tendency?
Standard deviation
