In which subject is the student poor?
English
Mathematics
Science
History
What are the average marks obtained by the students?
57
63
80
48
The mode of a set of observations is the value which
occurs most frequently
is central
is between maximum and minimum
none of these
Which of the following is true?
Mode = 3 median + 2 mean
Mode = 3 median - 2 mean
Mode = 2 median + 3 mode
Mode = 2 median - 3 mean
If in a data , 10 numbers are arranged in increasing order. If the 7th entry is increased by 4 , then the median increases by
0
4
6
5
Which of the following is not a measure of central tendency?
Median
Standard deviation
Mean
Mode
The measure of central tendency which can't be found graphically is
None of these
Mean =
Sum of observations × Number of observations
Sum of observations + Number of observations
Sum of observations - Number of observations
The mean of 994 , 996 , 998 , 1000 and 1002 is
992
1004
998
If the arithmetic mean of 6 , 8 , 5 , 7 , x and 4 is 7 , then x is
12
8