Chocolate A candy maker surveyed chocolate bars avail-able in a local supermarket and found the following least squares regression model:Calories = 28.4 + 11.37 Fat(g) + 2.91 Sugar(g).a) The hand-crafted chocolate she makes has 15g of fatand 20g of sugar. How many calories does the modelpredict for a serving?b) In fact, a laboratory test shows that her candy has 227 calories per serving. Find the residual correspond-ing to this candy. (Be sure to include the units.) c) What does that residual say about her candy?
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.
able in a local supermarket and found the following least
Calories = 28.4 + 11.37 Fat(g) + 2.91 Sugar(g).
a) The hand-crafted chocolate she makes has 15g of fat
and 20g of sugar. How many calories does the model
predict for a serving?
b) In fact, a laboratory test shows that her candy has
ing to this candy. (Be sure to include the units.)
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