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What is assumed mean &how can we find it
the following are the run score by two batsmen A and B in 10 innings. find who is more consistence?
A: 101. 20. 0. 36. 82. 45. 7. 13. 65. 14
B: 97. 12. 40. 96. 13. 8. 85. 8. 56. 15
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)
Jack recorded the amount of time he studied the night before each of 4 history quizzes and the score he got on each quiz. The data are in the table below.
Use linear regression to estimate the score Jack would get if he studied for 20 minutes.
A. 71B. 72C. 73D. 74E. 75
Find the mean and variance of the first n even natural numbers
When do we use step-deviation method.Please explain the method.
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?
what is central tendency ????
differenciate square root of tan x with respect to x from 1st principal method.
what is the meaning of discrete frequency distribution ?
how to find the sum of deviations of terms from assumed mean? plz reply soon
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 about the mean for the data.
can anyone plz explain me dis as early as possible how 2 find d value of x?
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.....
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
when will the others medical entrance forms be released and what r they
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.
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 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?
Define Mean and Median,and also the Difference..
find the variance for the first 25 natural numbers
what is assume mean method ?
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
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..
yes... how do you calculate assumed mean?
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.
When finding the variance where did the '2' go in the second terrm of the third step and why do we mulitply another 'n' to last term how do we get it? this is the answer to exercise 15.2 question2 provided by meritnation....
how to take out the square root by completing the squares method
Arni bought a piece of timber that is 280 cm long.He wants to cut it into two pieces, Shorter piece needs to be 75% of the length of the longer piece.How long will the shorter piece be?
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.
how to solve question no 5 of page 376 stat of class 11 explain in a easy way
how to calculate xi - x
in example 1 above how did you get 9.16 bar as 55/6?
find the ratio in which the line joining the line joining the points 1,2,3,and -3,4,-5 by xy plane
when we have to find the variance of the given data, what if we add the column of (xi-x bar) and then square our answer instead of squaring each number under the column (xi-x bar) and adding them up? Is this method correct and will the answer come same?
Find the mean and
variance for the first n natural numbers
with d increase in std.deviation,can v say it has more variability?
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