Central tendency and dispersion in statistics, Applied Statistics

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.

Posted Date: 2/12/2013 12:53:13 AM | Location : United States







Related Discussions:- Central tendency and dispersion in statistics, Assignment Help, Ask Question on Central tendency and dispersion in statistics, Get Answer, Expert's Help, Central tendency and dispersion in statistics Discussions

Write discussion on Central tendency and dispersion in statistics
Your posts are moderated
Related Questions

Sampling Error  It is the difference between the value of the actual population parameter and the sample statistic. Samples are used to arrive at conclusions regarding the p

#In planning the teaching assignments for next semester, Mr. Hinton must have a teacher in each of the 7 grades during each of the 6 periods of the day. If he has 10 teachers to ch

the two regrassion line will pass through the point (x,y)

The amounts of money won by the top ten finishers in a famous car race are listed below. $1,172,246    $163,659    $440,584    $350,634     $290,596 $186,731    $145,809     $143,2

You are a business analyst working for a company called Combined Computers Pty Ltd. You have been asked to prepare a business report with statistics in it for the managing director

The 4 assumptions of regression: 1.       Variables are normally distributed 2.       Linear relationship between the independent and dependent variables 3.       Homosced

Use the given information to find the P-value. The test statistic in a two-tailed test is z = 1.49 P-value = (round to four decimal places as needed)

These techniques are applied when the rows and the columns of the data table represent the same units and when the measure is a disiance or a similarity. The goal of the analysis i

Agency revenues. An economic consultant was retained by a large employment agency in a metropolitan area to develop a regression model for predicting monthly agency revenues ( y ).