A study regarding the relationship between age and the amount of pressure sales personnel feel in relation to their jobs revealed the following sample information. At the 0.01 significance level, is there a relationship between job pressure and age? Degree of Job Pressure Age (years) Low Medium High Less than 25 20 18 22 25 up to 40 50 46 44 40 up to 60 58 63 59 60 and older 34 43 43 GIVEN: H0: Age and pressure are not related. H1: Age and pressure are related. Reject H0 if chi-square > 16.812 FIND: Compute the value of chi-square. (Show your work)
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
A study regarding the relationship between age and the amount of pressure sales personnel feel in relation to their jobs revealed the following sample information. At the 0.01 significance level, is there a relationship between job pressure and age?
| Degree of Job Pressure | ||||
| Age (years) | Low | Medium | High | |
| Less than 25 | 20 | 18 | 22 | |
| 25 up to 40 | 50 | 46 | 44 | |
| 40 up to 60 | 58 | 63 | 59 | |
| 60 and older | 34 | 43 | 43 | |
GIVEN:
H0: Age and pressure are not related.
H1: Age and pressure are related.
| Reject H0 if chi-square > | 16.812 |
FIND:
Compute the value of chi-square. (Show your work)
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