## Interval Estimation and Point Estimation (2012)

The problem with using a point estimate is that although it is the single best guess you can make about the value of a population parameter, it is also usually wrong. Interval estimate overcomes this problem using interval estimation technique which is based on point estimate and margin of error. …

## Scatter Diagram: Graphical Representation (2012)

A scatterplot (also called a scatter graph or scatter Diagram) is used to observe the strength and direction between two quantitative variables. In statistics, the quantitative variables follow the interval or ratio scale from measurement scales. Scatter Diagram Usually, in a scatter, diagram the independent variable (also called the explanatory, …

## Pearson’s Correlation Coefficient SPSS (2012)

Pearson’s Correlation Coefficient SPSS Pearson’s correlation coefficient (or correlation or simply correlation) is used to find the degree of linear relationship between two continuous variables. The value for a correlation coefficient lies between 0.00 (no correlation) and 1.00 (perfect correlation). Generally, correlations above 0.80 are considered pretty high. Remember: How …

## Independent Samples t test in SPSS

Introduction (Independent Samples t test using SPSS) Independent Samples t test is a test for independent groups and is useful when the same variable has been measured in two independent groups and the researcher wants to know whether the difference between group means is statistically significant. “Independent groups” means that …