The following data relate the sales figures of the bar in Mark Kaltenbach's small bed-and-breakfast inn in portland, to the number of guests registerd that week: week guests bar sales 1 16 $330 2 12 $270 3 18 $380 4 14 $315 a) The simple linear regression equation that relates bar sales to number of guests (not to time) is (round your responses to one decimal place): Bar sales = 65+17.15 x guests b) If the forecast is 24 guests next week the bar sales are expected to be $[__] (round your response to one decimal place).
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.
The following data relate the sales figures of the bar in Mark Kaltenbach's small bed-and-breakfast inn in portland, to the number of guests registerd that week:
week guests bar sales
1 16 $330
2 12 $270
3 18 $380
4 14 $315
a) The simple linear regression equation that relates bar sales to number of guests (not to time) is (round your responses to one decimal place):
Bar sales = 65+17.15 x guests
b) If the forecast is 24 guests next week the bar sales are expected to be $[__] (round your response to one decimal place).
Given data,
| Week | Guest | Bar sales |
| 1 | 16 | 330 |
| 2 | 12 | 270 |
| 3 | 18 | 380 |
| 4 | 14 | 315 |
Simple linear regression equation is
Bar sales = 65 + 17.15 x guests
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