Surveys can give useful information about a population if a random sample of people complete the survey. But the information may be biased if only a small percentage of the sample actually return the survey. Will more people complete a survey if they are paid? In this study researchers examine the relationship between monetary incentive and the percentage of the sample who complete the survey. 65 55 15 10 20 30 40 50 Incentive (dollars) 1. The direction of the relationship is Select an answer 2. When researchers promised higher payments, the percentage of participants who completed the survey Select an answer 3. The form of the relationship is Select an answer 4. Based on the form of the relationship, the relationship is quite Select an answer e Percentage Returned
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.
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