A national electronics store sells air-pods. The table below gives the quantity of pairs sold (in thousands) when the price is Sp. Use your calculator to find the linear regression equation for the quantity of air-pods sold (in thousands) in terms of the price (Sp) per pair. (Round coefficients to 2 decimal places.) Then use your equation to answer the questions that follow. Price, So 150 128 180 200 220 190 Quantity (thousands) 300 340 275 258 230 240 (a) The store will sell about of pairs) fewer PAIRS of air pods for each $1 increase in price. (Remember, the quantity is given in THOUSANDS (b) if the price per pair is $157, the store can expect to sell about THOUSANDS of pairs.) PAIRS of air pods (Remember, the quantity is given in
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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