Determine the mean deviation for the data value 5,3,7,8,4,9

Find the range of numbers 8,6,5,2,1,10,16,19,22,26,25

Calculate quartile deviation for the following data: 30,18, 23, 15, 11, 29, 37,42, 10, 21

Find the quartiles and quartile deviation of the following data: 17, 2, 7, 27, 15, 5, 14, 8, 10, 24, 48, 10, 8, 7, 18, 28

Find the range of 21,12,22,32,2,35,64,67,98,86,76

Find the range 61,22,34,17,81,99,42,94

Calculate the quartile deviation of the following data: 500, 630, 750, 300, 129, 357, 100, 110, 117

Find the range of the following: 500, 630, 720, 520, 480, 870, 960,450

Which of the following are measures of dispersion?

1. Range
2. Mean
3. Variance
4. Standard deviation

Which of the following are the properties of dispersion?

1. It should be rigidly defined
2. It should be based on all the observations
3. It should be simple to understand and easy to calculate
4. It should be capable of further algebraic treatments

The degree of scatter or variation of the observations in a data about a central value is called

If mode is 12A and mode is 15A find Median:

Find the mode of 2,8,17,15,2,15,8,7,8

If median and mean are 12 and 4 respectively, find the mode

Which of the following is true?

Which of the following is true

Find the median of the given date : Mode = 24.5, Mean = 29.75

Which of the following are the merits of mode

1. Mode is affected by extreme values
2. It can be determined for open end classes
3. Mode is the only average that works with categorical data

Find the mode

Mark	persons
0 - 15	2
15 - 30	8
30 - 45	12
45 - 60	4

Find the mode:

Mark	Persons
0-10	4
10-20	6
20-30	16
30-40	8
40-50	6

The sizes of 15 classes selected at random are: 40, 42, 48, 46, 42, 49, 43, 42, 38, 42. Find the mode

The weight of 8 students in kgs are 54, 49, 51, 58, 61, 52, 54, 60. Find the median weight.

What is the median of 4, 2, 7, 3, 10, 9, 13?

Find the median of the first 5 whole numbers.

Find the median for the data 8, 5, 7, 10, 15, 21.

The runs scored by 11 players in the cricket match are as follows: 7, 16, 121, 51, 101, 81, 1, 16, 9, 11, 16 Find the median of the data.

Find the value of y from the following observations if these are already arranged in ascending order. The Median is 63.

Find the median of the numbers 8, 2, 6, 5, 4 and 3

Calculate the median of the numbers 16,18,13,14,15,12

The table below shows that employees in an office , sorted according to their age. Find the median:

Age	Number of workers
25 - 30	4
30 - 35	7
35 - 40	8
40 - 45	10
45 - 50	9
50 -55	8
Total	46

The height(in cm) of 9 students are as follows 155, 160 , 145, 149, 150, 147, 152, 144, 148 find the median of this data:

If the arithmetic mean of the observations 30, 40, 50, x, 70 and 80 is 55 . Calculate the value of x:

The arithmetic mean of 4 items is 5 and arithmetic mean of 5 items is 10 . The combined arithmetic mean is

which of the following is the merits of arithmetic mean

1. It has a rigid definition
2. AM is highly affected by extreme values
3. AM is based upon all the observations
4. It is least affected by fluctuations of sampling

The table classifies 40 persons who took a test according to the marks they scored: Calculate the mean marks scored.

Marks	Persons
0 - 10	4
10 - 20	6
20 - 30	16
30 - 40	8
40 - 50	6

The table shows the number of workers of different categories in an office , grouped according to their daily wages. What is the mean daily wages?

Daily wages(Rs)	Number of workers
675	8
730	4
755	4
780	3
840	1

The arithmetic mean of 10 items is 4 and arithmetic mean of 5 items is 10 . The combined arithmetic mean is:

If the arithmetic mean of the observations 30, 40, 50, x, and 70 is 50 . Calculate the value of x:

Which of the following is a mathematical average?

Given data consists of distinct values of xi occurring with frequencies fi. The mean value for the data is

xi 5 6 8 10 fi 8 10 10 12

The marks obtained by 8 students in a mathematics test are: 15, 20, 25, 25, 30, 35, 40, 50. Find median

The marks obtained by 8 students in a mathematics test are: 15, 20, 25, 25, 30, 35, 40, 50. Find mean.

In a simultaneous throw of a pair of dice, find the probability of getting a total more than 7.

In a throw of a coin, the probability of getting a head is?

One is asked to say a two-digit number. What is the probability of it being a multiple of 9?

Example of positional average

Which of the following is an example of central tendency

ഒരു അന്വേഷകൻ (Investigator) തന്റെ സ്വന്തം ആവശ്യത്തിനായി വിവരദാതാക്കളിൽ നിന്ന് നേരിട്ട് ശേഖരിക്കുന്ന ഡാറ്റ

ശേഖരിച്ച അസംസ്‌ക്യത വസ്‌തുതകളെയും സംഖ്യകളെയും പറയുന്നത് :

ചരങ്ങളുടെ വിലകൾതമ്മിലുള്ള ബന്ധത്തിൻ്റെ അടിസ്ഥാനത്തിൽ ഡാറ്റ യ്ക്ക്ക്രമം നൽകുന്നതിന് അറിയപ്പെടുന്നത്