correlation of data

Choose the graph wherein the line best fits as the negative correlation for the data points given. => Graph 2 or Graph 4 or Graph 3 or Graph 1..

A sales manager wishes to know whether there is a relation between the number of sales persons and sales per day. Find correlation coefficient and test the significance of the correlation coefficient of the following data at ∝ = 0.01. No .of sales persons 2 7 1 3 ..

A researcher wishes to examine whether there is a correlation between cost of internet service per month and degree of customer satisfaction.The data collected is shown here. Calculate the correlation coefficient and describe the relationship. Dollars 12 24 14 12 18 6 ..

Comparing center and spread: within group, between group variation Comparing clusters and gaps Comparing outliners and other unusual features Comparing shapes Exploring bivariate data: Analyzing patterns in scatterplots Correlation and linearity Least-squares r..

The grade point average of 10 students in two subjects are as follows: Subject I 2.0 2.1 2.2 3.8 3.1 3.4 2.1 2.3 2.5 2.6 Subject II 2.2 2.4 2.0 3.4 2.9 3.6 2.0 2.6 2.7 2.4 Find t test value and test the significance of the correlation coefficient using the P-value method for this dat..

A chair manufacturing company has experienced the following costs for the first half of the year. Determine the correlation coefficient and the equation of the regression line for the data and predict the value for y ′ when x = 6. Month Jan Feb Mar Apr May Jun Chairs made ..

A shop owner wants to find the relation between the demand ( x 1 ), supply ( x 2 ) and the price ( y ) of an item. After 6 months he got this data which is shown here. Find F test value and test the significance of the multiple correlation coefficient R at α = 0.025. Deman..

The coach of an NBA team wanted to know the relationship between the heights of his players and the average points scored by them in each game. After certain rounds of games he had this data. Player A B C D E F G H I J Height (in inches) 71 78 79 80 82 84 81 81 74 80 Points (avg/game) 13...

Linear equations/inequalities Monomials and polynomials Factoring second and third degree polynomials Rational expressions/functions Quadratic equations Quadratic functions Exponents, factors, variation, exponential growth/decay Hypothesis, counterexamples Correlation for d..

Types of events Measures of central tendency/dispersion, quartiles, interquartiles Permutations and combinations Methods of data representation Statistical experiments (more than one variable) Correlation and causatio..