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What is the significance of using coefficient of correlation as a statistical tool of analysis?

It tells you how strong and what type of correlations two random variables or data values have. The coefficient is between -1 and 1. The value of 0 means no correlation, while -1 is a strong negative correlation and 1 is a strong positive correlation. Often a scatter plot is used to visualize this.


Is there a positive correlation a negative correlation or no correlation in the scatter plot Scatter Plot in Link httpi1158photobucketcomalbumsp615Connie1009untitledpng?

Can you split the name of this up somehow when you resubmit your question, so that an answerer can attempt to use the search facility on photobucket.com?


How do you read a scatter graph?

Scatter-plot shows correlation between two different variables (one on the y-axis, the other on x-axis). If there is linear correlation, the scatter-points form a straight line from zero (origo) to some direction. The more cloud-like distribution the scatter-plot does have, the less those variables in question have correlation or dependence with each other.


When the points on a graph tend to scatter randomly you say they indicate?

No Correlation


Is it possible to make a prediction based in a scatter plot with no correlation?

Correlation is an estimate of a linear relationship between two variables and takes no account of non-linear relationship. If the relationship is quadratic and the domain is symmetric about some point, the correlation will be zero. It is, thus possible for the points on the scatter plot to lie exactly on a parabola while the calculated correlation is zero. In such a case, it is easy to make a prediction despite no correlation.

Related Questions

What kind diagram is used to graph two-variable data for correlation analysis?

A scatter plot.A scatter plot.A scatter plot.A scatter plot.


What is the significance of using coefficient of correlation as a statistical tool of analysis?

It tells you how strong and what type of correlations two random variables or data values have. The coefficient is between -1 and 1. The value of 0 means no correlation, while -1 is a strong negative correlation and 1 is a strong positive correlation. Often a scatter plot is used to visualize this.


What are the three ways to describe data in a scatter plot?

You can describe if there's any obvious correlation (like a positive or negative correlation), apparent outliers, and the corrlation coefficient, which is the "r" on your calculator when you do a regression model. The closer "r" is to either -1 or 1, the stronger that correlation is.


What is scatter diagram?

a scatter diagram is a tool for analysing relationships.


What does it means to have a correlation in a scatter plot?

A correlation exists in a scatter plot if there is a general trend in the outputs as inputs increase. If the outputs generally increase in value, then there is a positive correlation. If the outputs generally decrease in value, then there is a negative correlation.


What is the distinguish between a dot and scatter diagram?

Don't understand scatter diagram, I can't seem to grasp how to figure them out, My question is how to figure out and apply a scatter diagram?


Is there a positive correlation a negative correlation or no correlation in the scatter plot Scatter Plot in Link httpi1158photobucketcomalbumsp615Connie1009untitledpng?

Can you split the name of this up somehow when you resubmit your question, so that an answerer can attempt to use the search facility on photobucket.com?


What is a correlation on a scatter graph in maths?

it is the line in the middle of the crosses


How do you read a scatter graph?

Scatter-plot shows correlation between two different variables (one on the y-axis, the other on x-axis). If there is linear correlation, the scatter-points form a straight line from zero (origo) to some direction. The more cloud-like distribution the scatter-plot does have, the less those variables in question have correlation or dependence with each other.


What graphs can you use to measure correlation?

A scatter graph can be used to establish whether or not there is correlation and to get an approximate idea as to its strength. But no graph will actually measure correlation.


How is a scatter plot that shows no correlation different from a scatter plot that has a negative corrrelation?

A scatterplot with no correlation means that there is no relation between the two categories, a negative correlation means that the two categories have a relationship that as one gets greater the other gets smaller


When the points on a graph tend to scatter randomly you say they indicate?

No Correlation