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Measures Of Central Tendency Free Doubts and Solutions

CBSE - IX - Mathematics - Statistics

explain about central tendency

Asked by shanushukla26 13th February 2018, 9:10 PM
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CBSE - IX - Mathematics - Statistics

Find p if mean is 40.4 and xi 10  20   30  40   50   60  70  and fi  3  8  12  5   p  7  5

Asked by nisha_vini29 31st January 2018, 1:12 AM
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CBSE - IX - Mathematics - Statistics

find missing frequency if mean is 1.46 and values of xi are 0 1  2  3 4 5 and fi are 46  x  y  25  10  5 = 200

Asked by nisha_vini29 31st January 2018, 12:58 AM
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CBSE - IX - Mathematics - Statistics

What day was 26th of January 1950 and 15th August 1947?
 

Asked by aahnik.mohanty 29th December 2017, 1:24 PM
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CBSE - IX - Mathematics - Statistics

In a Mathematics test given to 15 students, the following marks out of 100 are recorded: 41, 39, 48, 52, 46, 62, 54, 40, 96, 52, 98, 40, 42, 52, 60 Find the median and mode of this data.

Asked by Topperlearning User 7th November 2017, 1:48 PM
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CBSE - IX - Mathematics - Statistics

Find mean, mode and median for the following data: 10, 15, 18, 10, 10, 20, 10, 20, 15, 21, 15 and 25

Asked by Topperlearning User 7th November 2017, 1:46 PM
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CBSE - IX - Mathematics - Statistics

The points scored by a basket ball team in a series of match are as follows: 17, 2, 7, 27, 25, 5, 14, 18, 10, 24, 28, 10, 8, 7, 10, 28 Find the median and mode of the above data.

Asked by Topperlearning User 7th November 2017, 1:45 PM
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CBSE - IX - Mathematics - Statistics

The numbers 2, 3, 4, 4, 2x + 1, 5, 5, 6, 7 are arranged in ascending order. If the median is 5, find x. Hence, find the mode.

Asked by Topperlearning User 7th November 2017, 1:38 PM
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CBSE - IX - Mathematics - Statistics

The following observations have been arranged in ascending order: 29, 32, 48, 58, x, x + 2, 64, 78, 84, 90. If median of the data is 63, find the mode of the data.

Asked by Topperlearning User 7th November 2017, 1:35 PM
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CBSE - IX - Mathematics - Statistics

Find the median of the following data 19, 25, 59, 48, 35, 37, 30, 32, 51. If 25 is replaced by 52 what will be the new median?

Asked by Topperlearning User 7th November 2017, 1:13 PM
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CBSE - IX - Mathematics - Statistics

Mean of 25 observations was found to be 78.4. But later on, it was discovered that one observation 96 was misread as 69. Find the correct mean.

Asked by Topperlearning User 18th August 2017, 2:05 PM
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CBSE - IX - Mathematics - Statistics

Asked by Topperlearning User 18th August 2017, 2:05 PM
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CBSE - IX - Mathematics - Statistics

Find the median of first 11 multiples of 3.

Asked by Topperlearning User 18th August 2017, 2:01 PM
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CBSE - IX - Mathematics - Statistics

Asked by Topperlearning User 18th August 2017, 2:01 PM
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CBSE - IX - Mathematics - Statistics

Determine the median of 24, 23, a, a - 1, 12, 16, where a is the mean of 10, 20, 30, 40 and 50.

Asked by Topperlearning User 18th August 2017, 1:58 PM
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CBSE - IX - Mathematics - Statistics

For what value of y is the mode of the following data equal to 7? 3, 5, 6, 7, 3, 4, 7, 3, 6, y, 8, 7.

Asked by Topperlearning User 18th August 2017, 1:58 PM
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CBSE - IX - Mathematics - Statistics

The mean of 68 numbers is 18. If each number is divided by 6, find the new mean. Find the relation between the new mean and the old mean.

Asked by Topperlearning User 18th August 2017, 1:57 PM
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CBSE - IX - Mathematics - Statistics

For what value of x, is the mode of the following data 17?15,16,17,13,17,16,14,x,17,16,15,15

Asked by Topperlearning User 18th August 2017, 1:57 PM
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CBSE - IX - Mathematics - Statistics

The mean of 10 numbers is 20 . If 5 is subtracted from every number , what will be the new mean.

Asked by Madan Gupta 29th March 2017, 7:11 AM
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CBSE - IX - Mathematics - Statistics

WHICH ONE OF THE FOLLOWING IS CORRECT ALSO WHY AND HOW ?
 
1. MODE = 2 MEDIAN - 3 MEAN
2. MODE = 3 MEDIAN - 2 MEAN
3. MEAN = 3 MEDIAN - 2 MODE
4. MEDIAN = 3 MEAN - 2 MEAN

Asked by Madan Gupta 29th March 2017, 7:06 AM
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CBSE - IX - Mathematics - Statistics

Distingues between center point and average value of given dats ?
 

Asked by Ramgopal 21st May 2016, 1:49 PM
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CBSE - IX - Mathematics - Statistics

the mean weight of 8 numbers is 15. If each number is multiplied by 2, what will be the new mean
 

Asked by Rishitha Reddy 10th March 2016, 8:40 PM
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CBSE - IX - Mathematics - Statistics

I have a question:-
->Find the mean of the following distribution:
x:15   17   19   20+p   23
f: 2    3     4    5p       6

Asked by Amrut Kurtkoti 10th December 2014, 8:15 PM
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CBSE - IX - Mathematics - Statistics

sana participated in a two -round TV qiz in the first round she answered 10 recieved 4 points for ecach correct answer and lost a point for each incorrect answer. sana needed more than 20 points to paticipated in second round.
 

Asked by thomassubin32 1st September 2014, 9:19 PM
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CBSE - IX - Mathematics - Statistics

The mean of 25 observations is 36. If the mean of the first 13 observations is 32 and that of last 13 observations is 39. Find the 13th observation.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Statistics

If mean of five observations x, x + 2, x + 4, x + 6, x + 8 is 11, find mean of first three observations.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Statistics

The mean weight per student in a group of 7 students is 55 kg. The individual weights of 6 of them in kg are 52, 54, 55, 53, 56, 54. Find the weight of the seventh student.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Statistics

The median of the following observations arranged in ascending order is 27. Find x. 13, 15, 17, 21, x + 2, x + 4, 32, 37, 41 and 48

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Statistics

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Statistics

If the mean of the following distribution is 6, find the value of p. x 2 4 6 10 p + 5 f 3 2 3 1 2  

Asked by Topperlearning User 9th December 2013, 10:55 AM
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CBSE - IX - Mathematics - Statistics

Find the missing frequencies f1 and f2 in the following frequency distribution, if it is known that the mean of the distribution is 1.46 x1 0 1 2 3 4 5 Total f1 46 f1 f2 25 10 5 200  

Asked by Topperlearning User 9th December 2013, 10:52 AM
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CBSE - IX - Mathematics - Statistics

The mean of the following distribution is 50.  xi 10 30 50 70 90 fi 17 5a + 3 32 7a - 11 19 Find the value of a.

Asked by Topperlearning User 9th December 2013, 10:36 AM
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CBSE - IX - Mathematics - Statistics

The mean of the following distribution is 50. xi 10 30 50 70 90 yi 17 5p + 3 32 7p - 11 19 Find the value of p.

Asked by Topperlearning User 9th December 2013, 10:33 AM
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CBSE - IX - Mathematics - Statistics

Obtain the mean of the following data: Variable (xi­) 4 6 8 10 12 Frequency (fi) 4 8 14 11 3

Asked by Topperlearning User 9th December 2013, 10:28 AM
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CBSE - IX - Mathematics - Statistics

Asked by Topperlearning User 9th December 2013, 10:08 AM
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CBSE - IX - Mathematics - Statistics

Find the median of the given data: 26, 56, 32, 33, 60, 17, 34, 29 and 45. If 26 is replaced by 62, find the new median.

Asked by Topperlearning User 9th December 2013, 9:53 AM
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CBSE - IX - Mathematics - Statistics

Find the median of the following data: 23, 31, 47, 46, 27, 37, 30, 24.

Asked by Topperlearning User 9th December 2013, 9:50 AM
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CBSE - IX - Mathematics - Statistics

The median of following observations, arranged in ascending order, is 25. Find x. 11, 13, 15, 19, x + 2, x + 4, 30, 35, 39, 46.

Asked by Topperlearning User 9th December 2013, 9:48 AM
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CBSE - IX - Mathematics - Statistics

Asked by Topperlearning User 9th December 2013, 9:46 AM
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CBSE - IX - Mathematics - Statistics

The mode of the data 12, 22, 12, 13, 18, 28, 12, 18, 13, 18, x is 18. So what is the value of that x can take?

Asked by Topperlearning User 9th December 2013, 9:44 AM
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CBSE - IX - Mathematics - Statistics

Find the median of 34, 32, x, x - 1, 19, 15, 11 where x is the mean of 10, 20, 30, 40, 50.

Asked by Topperlearning User 9th December 2013, 9:39 AM
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CBSE - IX - Mathematics - Statistics

Give one example of a situation in which(i) The mean is an appropriate measure of central tendency(ii) The mean is not an appropriate measure of central tendency but the median is an appropriate measure of central tendency

Asked by Topperlearning User 9th December 2013, 9:31 AM
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CBSE - IX - Mathematics - Statistics

Asked by Topperlearning User 9th December 2013, 9:09 AM
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CBSE - IX - Mathematics - Statistics

Asked by Topperlearning User 9th December 2013, 8:45 AM
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CBSE - IX - Mathematics - Statistics

If the mean of 10, 12, 18, 11, p and 19 is 15, find the value of p.

Asked by Topperlearning User 9th December 2013, 8:42 AM
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CBSE - IX - Mathematics - Statistics

Find the mean of factors of 24.

Asked by Topperlearning User 9th December 2013, 8:40 AM
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CBSE - IX - Mathematics - Statistics

If mean of 8, 6, 7, P and 9 is 7. Find the value of P.

Asked by Topperlearning User 9th December 2013, 8:38 AM
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CBSE - IX - Mathematics - Statistics

Find the mean of the first ten prime numbers.

Asked by Topperlearning User 9th December 2013, 8:37 AM
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CBSE - IX - Mathematics - Statistics

Find the median of the following data: 15, 35, 18, 27, 19, 23, 29, 20, 28

Asked by Topperlearning User 9th December 2013, 8:36 AM
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CBSE - IX - Mathematics - Statistics

If median of 29, 32, 48, 50, x, x + 2, 72, 78, 84, 95 (arranged in ascending order) is 63, find x.

Asked by Topperlearning User 9th December 2013, 8:34 AM
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CBSE - IX - Mathematics - Statistics

Find the mean of first 10 prime numbers.

Asked by Topperlearning User 9th December 2013, 8:30 AM
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CBSE - IX - Mathematics - Statistics

Find the mean of first 10 odd numbers.

Asked by Topperlearning User 9th December 2013, 8:29 AM
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CBSE - IX - Mathematics - Statistics

Find the median of the following data:3, 13, 9, 5, 21, 23, 23, 40, 23, 14, 12, 46, 22, 29.

Asked by Topperlearning User 9th December 2013, 8:24 AM
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CBSE - IX - Mathematics - Statistics

The monthly salary (in thousand rupees) of 50 workers in a factory are given below: Salary (in thousand Rupees) 5.2 6.9 8.2 10.5 12.2 14.0 No. of workers 8 9 10 12 6 5 Find the mean salary of a worker.

Asked by Topperlearning User 9th December 2013, 8:19 AM
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CBSE - IX - Mathematics - Statistics

The following data has been arranged in ascending order: 12, 14, 17, 20, 22, x, 26, 28, 32, 36. If the median of the data is 23, find x. In the above data, if 32 is replaced with 23, find the new median.

Asked by Topperlearning User 9th December 2013, 12:57 AM
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CBSE - IX - Mathematics - Statistics

Asked by Topperlearning User 9th December 2013, 12:56 AM
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CBSE - IX - Mathematics - Statistics

Asked by Topperlearning User 9th December 2013, 12:39 AM
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CBSE - IX - Mathematics - Statistics

The mean of 10 observation is 20. If nine observations are 16, 20, 18, 17, 22, 16, 15, 20, 17; find the tenth observation.

Asked by Topperlearning User 9th December 2013, 12:25 AM
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CBSE - IX - Mathematics - Statistics

Asked by Topperlearning User 9th December 2013, 12:20 AM
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CBSE - IX - Mathematics - Statistics

Find the mean of the following frequency distribution showing the marks obtained in a class test by 20 students. Marks 10 15 20 25 No. of students 4 5 8 3  

Asked by Topperlearning User 8th December 2013, 11:08 PM
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