Final project presentation: Variable selection app.

Oulu, Finland

Compare correlations of variables in the Chatterjee-Price Attitude Data

• application shows scatter plot of the two chosen variables
• application calculates and presents correlation coeffient of the chosen variables

Use correlation data to select three variables to explain variability in variable rating

• application fits a linear regression model: (lm(rating ~ chosen variables))
• application reports R² and adjusted R² values of the model

• survey of clerical employees of large financial organization
• data from questionnaires of approximately 35 employees for each of 30 departments
• numbers give percent proportion of favourable responses to seven questions in each department
• data frame with 30 observations on 7 variables

Source

Chatterjee, S. and Price, B. (1977) Regression Analysis by Example. New York: Wiley. (Section 3.7, p.68ff of 2nd ed.(1991).)

  rating complaints privileges learning raises critical advance
1     43         51         30       39     61       92      45

Variable	Description
Y rating	Over all rating
X[1] complaints	Handling of employee complaints
X[2] privileges	Does not allow special privileges
X[3] learning	Opportunity to learn
X[4] raises	Raises based on performance
X[5] critical	Too critical
X[6] advance	Advancement