Analysis of Variance ANOVA. Example Suppose that we have five educational levels in our population denoted by 1, 2, 3, 4, 5 We measure the hours per week.

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Presentation transcript:

Analysis of Variance ANOVA

Example Suppose that we have five educational levels in our population denoted by 1, 2, 3, 4, 5 We measure the hours per week that each level watches TV and we repeat this experiment for 6 weeks. So we will enter our data in the following table

Week 1Week 2Week 3Week 4Week 5Week

We want to know that whether educational level affect on the weekly hours watching TV or not. So we define this hypothesis

For testing this hypothesis we use ANOVA in SPSS by using following order 1- Entering data in the variable view 2- Analyze 3- Compare Means 4- One-Way ANOVA

Correlation

In this part we are going to calculate the Correlation between two variables In SPSS we can get the Correlation Coefficients between two variables like -Pearson Correlation Coefficient -Spearman Correlation Coefficient

For getting these coefficients we use this order in SPSS 1- Entering data in variable view 2- Analyze 3- Correlate 4-Bivariate Correlation

Example XY XY

Results If correlation coefficient between two variables is 1 or near to 1, they are dependent. If it is zero or near to zero, they are independent. So, in this example X & Y are independent