Regression and Linear Trend Equations
Not what you're looking for?
1. I would like to a use the regression equation: Y'= a + bX Please present the calculations and results and ANOVA
Graphs using a scatter diagram
Compute a moving average.
2. Determine a linear trend equation.
3. Compute a trend equation for a nonlinear trend.
4. Use a trend equation to forecast future time periods and to develop seasonally adjusted forecasts.
5. Make all possible observations and interpret the result
Prices Earning Billons
2.71 9.92
2.71 9.99
2.72 10
2.72 10.1
2.73 10.2
2.73 10.9
2.74 11.2
2.74 11.5
2.75 11.9
2.76 12.1
2.77 12.2
2.77 12.3
2.78 13.3
2.79 14.2
2.81 15.7
2.82 16.4
2.86 16.8
2.89 17.3
2.99 18.2
3.79 22
Purchase this Solution
Solution Summary
This solution discusses regression and linear trend equations. Calculations for results and ANOVA are determined.
Solution Preview
Please see the attachments.
Calculations are done in Excel.
1. I would like to a Use the regression equation: Y'= a + bX Please present the calculations and results and ANOVA
The general form of simple linear regression is Y= a + bX Where Y is the dependent variable and X is the independent variable. a and be are known as the regression coefficients .They are estimated by the method of least squares. The estimates of a and b are given by
,
The parameter b measures the impact of unit change in X on the dependent variable Y. It is the slope of the regression line. The parameter a is the value of Y when X=0. It is known as the Intercept term
The regression equation can be used to predict the value of Y for a given X. The predicted value of Y is given by
The correlation is given by the formula
The square of correlation between X and Y is known as the coefficient of determination (R2) . R2 gives the percentage of variation that can be predicated using the regression equation.
Time Prices: X Earning Billons ...
Purchase this Solution
Free BrainMass Quizzes
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.