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What is assumed mean &how can we find it
how to use log & antilogtable to find square roots
What is the difference between mean deviation and standard deviation?
find dy/dx if y =(sec x+tanx )/(secx-tanx)
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
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 discrete frequency distribution? And what is continuous frequency distribution?.
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 ?
Why is the sum of observations divided by TOTAL NUMBER OF OBSERVATIONS ??!! I know it is a formula...but i need a logical answer!
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
I can`t understand example 2 plz. explain it i have my maths exam on Friday.
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..
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?
find the variance for the first 25 natural numbers
what is assume mean method ?
whre iz d video???????????
wht is the meaning of deviation in mean and median xplain with example
how can we choose assumed mean?
How do we know which value to take as 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..
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
In the above video on what basis we had taken " A " = 10
yes... how do you calculate assumed mean?
Find the mean and variance for the following frequency distribution.
if we find it by long method and the short cute method , the answer is not matching. please experts answer this in boh the ways
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?
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
how to solve question no 5 of page 376 stat of class 11 explain in a easy way
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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