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In a continous frequency distribution the median of the data is 21. If each observation is increased by 6 the new median is
New median = 21 + 6 = 27
Following table shows sale of shoes in a store during one month. The model size of the shoes is
Maximum number of pairs sold = 25
(Size 5)
Find the median of the data when mode = 35.3 and mean = 30.5
Find the mean of the data
Find the mode of the following frequency
Model class
Mode
The mean of first 10 natural numbers is
Mean
Find the value of y if the following observation is arranged in ascending order. The median is 63
20, 24, 42, y, y + 2, 73, 75, 80, 99
Median is
The mode of the following observations is
0, 5, 5, 1, 6, 4, 3, 0, 5, 5, 6, 2
5 occurs the maximum number of times.
So mode is 5
In a frequency distribution if assumed mean is \(55,\sum f_i=100,h=10 \) and \(\sum f_iu_i=30 \). Find the mean
Mean
The average score of boys in the examination of a school is 71 and that of the girls is 73. The average score of the school in the examination is 71.8. Find the ratio of the number of boys to the number of girls who appeared in the examination
Total score of boys
Total score of girls
A/Q
If the mean of the following distribution is 54, find the missing frequency \(x \)
Mean
The median of the following data is
Median
The class mark of the class 1025 is
Class mark
A data has 13 observation arranged in descending order. Which observation represent the median of data?
The graphical representation from which the mode of a frequency distribution is obtained is
The mode of frequency distribution is determined graphically from histogram
If \(x_i’s \) are the midpoint of the class interval of a grouped data, \(f_i’s \) are the corresponding frequencies and \( \bar x\) is the mean. The value of \(\sum f_i(x_i\bar x) \) is
If the mean of the following distribution is 6, The value of P is
If the mean of first ‘n’ natural numbers is \(\dfrac{5n}{9} \), then \(n= \)
A/Q
Which of the following is not central tendency?
Mean, Mode and Median are central tendency
Which one of the following groups has different class size?
In all the group the class size is 5 except (243 – 249)
The statistical data are of two types. These are
Data are of two types: 1. Primary data, 2. Secondary data
The difference between the maximum and minimum observations is
Range = height – lowest
If the mean of \(x \) and \(\dfrac{1}{x} \) is \(M \) then the mean of \(x^3 \) and \(\dfrac{1}{x^3} \) is
If the median of the data 24, 25, 26, x + 2, x + 3, 30, 31, 34 is 27.5. The value of x is
Median
If the mean of \(x, x + 3, x + 6, x + 9, x + 12\) is \(10\). The value of \(x \) is
The median of first 10 prime numbers is
First 10 prime numbers
= 2, 3, 5, 7, 11, 13, 17, 19, 23, 29
Median
The mean of 1, 3, 4, 5, 7, 4 is m. The numbers 3, 2, 2, 4, 3, 3, P have mean m – 1 and median q. The value of P + q is
Mean of
Data is
Median
Median
So,
If the mean of \(6, 7, x, 8, y, 14\) is \(9 \) then
The mean of first \(n \) odd natural number is
Mean
The difference of mode and median of a data is 24. The value of difference of median and mean is