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What is assumed mean &how can we find it
how to use log & antilogtable to find square roots
calculate mean and standard deviation from the following data using direct method
size 10-20 20-30 30-40 40-50 50-60 60-70 70-80
frequency 5 10 15 20 25 18 78
What is the difference between mean deviation and standard deviation?
find dy/dx if y =(sec x+tanx )/(secx-tanx)
When do we use step-deviation method.Please explain the method.
Find the mean and variance of the first n even natural numbers
more than 50 100
more than 55 98
more than 60 90
more than 65 78
more than 70 54
more than 75 16
the mean and standard deviation of 100 observations were calculated as 40 and 5.1 resp. by a student who took by mistake 50 instead of 40 for one observation. what are correct mean and standard deviation?
Wages (up to ) 10 20 30 40 50 60 70 80 no. of workers 12 30 65 107 157 202 222 230find the coefficient of variation ?
the mean of 5 observations is 4.4 and their variance is 8.24.if three of the observations are 1,2,6 .,find the other two observations.....
what is central tendency ????
what is the meaning of discrete frequency distribution ?
The variance of 15 observations is 4.If each observation is increased by 9,find the variance of the resulting observations?
please give a detailed expalanation
Find the mean deviation from the mean and standard deviation of the series:
a, a+d, a+2d, ....., (a+nd), .... a+(2n-1)d, a+2nd
let x1, x2, x3,....... xn be n values of a variable X. If these values are changed to x1+a, x2+a,.... xn +a, where a belongs to R, show that the variance remains unchanged.
Define Mean and Median,and also the Difference..
and variance of 7 observations are 8 and 16, respectively. If five of
the observations are 2, 4, 10, 12 and 14. Find the remaining two
how to solve question no 5 of page 376 stat of class 11 explain in a easy way
how to find assumed mean in statistics
how to calculate assumed mean ?
how come the assumed mean 10 in the 1st video of variance and step deviation?
find the variance for the first 25 natural numbers
what is assume mean method ?
how to make a discrete class to a continuous class for e.g.--- 0-17 67-85
how can we choose assumed mean?
The mean and standard deviation of a group of 100 observations were found to be 20 and 3 respectively.Later on it was found that 3 observations were incorrect which were recorded as 21,21 and 18.Find the mean and Standard deviaton if the incorrect observations were omitted.
Find the mean and
standard deviation using short-cut method.
An original frequency table with mean 11 and variance 9.9 was lost but the following table derived from it was found. Contruct the original table.
Value of 'd':- -2,-1,0,1,2
how to find C.F..??? plzz help
An analysis of monthly
wages paid to workers in two firms A and B, belonging to the same
industry, gives the following results:
No. of wage earners
Mean of monthly wages
Variance of the distribution of
(i) Which firm A or B
pays larger amount as monthly wages?
(ii) Which firm, A or
B, shows greater variability in individual wages?
The variance of 15 observation is 4. If each observation is increased by 9, find the variance of resulting observation.
If the mean deviation about the median of the numbers a,2a,3a........,50a is 50. Then "modulus of a" equals ?? plz answer fast..
if each of the observations x1,x2,x3,.....,xn is increased by a, where a is a negative or positive number show that the variance remains unchanged.
how to take out the square root by completing the squares method
yes... how do you calculate assumed mean?
i did'nt get mean deviation of median.......Plz explain
and variance of eight observations are 9 and 9.25, respectively. If
six of the observations are 6, 7, 10, 12, 12 and 13, find the
remaining two observations.
solution of chapter average due date of maths isc 11 sum 10
The age distribution of 100 life-insurance policy holders is as follows
Age (on nearest 17-19.5 20-25.5 26-35.5 36-40.5 41-50.5 51-55.5 56-60.5 61 - 70.5
No of persons 5 16 12 26 14 12 6 5
Calcualte the mean deviation from the median age.
what do you mean by statistics?
I can`t understand example 2 plz. explain it i have my maths exam on Friday.
what is mean deviation ?
find the ratio in which the line joining the line joining the points 1,2,3,and -3,4,-5 by xy plane
Find the mean and
variance for the first n natural numbers
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