The table shows the value y (in dollars) of a stock on day t. Use the regression feature on a graphing calculator to find a quadratic model and a cubic model for the data. t 1 2 3 4 5 6 7 8 9 10 6.38 6.75 6.91 7.04 7.06 6.92 6.71 6.40 5.98 5.55 O Cubic model Which model is a better fit for the data? Quadratic model Enter the better-fitting model. Round each number to the nearest thousandth. Use the model to estimate the value of the stock on day 13 to the nearest cent. సా
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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