Central tendency and dispersion in statistics, Applied Statistics

Assignment Help:

Central Tendency and Dispersion in Statistics:

Write a note on the following :

i)    What is the importance of Measures Of Central Tendency and Dispersion in Statistics ?

ii)   Define Correlation coefficient and discuss two methods of its computation .

iii)  What is regression analysis ? Discuss the relation between 'correlation coefficient ' and the 'regression coefficients'.

Ques: Data on the scores obtained by A & B are given below :

A

B

23     24     43     37     26

43     37     29     49     41

23     37     43     41     26

37     24     29     43     49

29     18     23     24     25

23     24     28     35     39

34     18     35     24     42

37     41     25     23     39

 

i)  Compare Arithmetic Mean and Standard Deviation for the two groups and compute pooled mean and variances.

ii) Comment on the consistency between A and B.


Related Discussions:- Central tendency and dispersion in statistics

A new weight-watching company, A new weight-watching company, Weight Reduce...

A new weight-watching company, Weight Reducers International, advertises that those who join will lose, on the average, 10 pounds the first two weeks with a standard deviation of 2

Determine the matrix of the transformation, Consider the linear transformat...

Consider the linear transformation (a) Find the image of (3 , -2 , 2) under T. (b) Does the vector (5, 3) belong to the range of T? (c) Determine the matrix of the transf

Calculate the seasonal indexes , The total number of overtime hours (in 100...

The total number of overtime hours (in 1000s) worked in a large steel mill was recorded for 16 quarters, as shown below. Year Quarter Overtime hour

Cluster sampling, Cluster Sampling This method is also known as multi s...

Cluster Sampling This method is also known as multi stage sampling .Under this method random selection is made of the ultimate or final units from a given stratum. The sampling

Regression, why we use dummy variable

why we use dummy variable

Index number, Index Number Meaning and Definitions of Index Number ...

Index Number Meaning and Definitions of Index Number The index numbers are the special type of averages which are presented in percentages and computed on certain base.

Stream flow gauging, (a) At a stream gauging station, the following dischar...

(a) At a stream gauging station, the following discharges and stage measurements were taken for the purpose of the rating curve at that section: Stage (m) 1

Iterative convergence of the method, You are given the differential equatio...

You are given the differential equation dy/dx = y' = f(x, y) with initial condition y(0 ) 1 = . The following numerical method is also given: where  f n = f( x n , y n )

Test for equality of proportions, Test for Equality of Proportions For...

Test for Equality of Proportions For example, we may want to test whether the percentage of smokers (p 1 ) among the males equals the percentage of female smokers (p 2 ). W

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd