. SS 41.674 71.875 Develop the estimated regression line. At α = 0.05, test for the significance of the slope. At α = 0.05, perform an F test. Determine the coefficient of determination. = 13.251 + 0.803x t = 2.086; p-value is between .05 and .1 (critical t = 2.447); do not reject Ho F = 4.348; p...
standard deviation of errors. i. Construct a 90% confidence interval for B. j. Test at the 5% significancelevel whether B is negative. k. Using α = .05, test whether ρ is different from zero.
Solution a. Based on theory and intuition, we expect the insurance premium to depend on driving...
is no significant cause and effect relation between online/offline user and their profitability. To find the relation between the demographics of the customer and their profitability, we perform a regressionanalysis. To enable regressionanalysis, following steps are taken: 1) Independent variables...
August 26, 2012
Course Project Part C
The following report displays regression and correlation analysis for AJ Davis Department Stores data on credit balance and size. We will use the data collected from 50 credit customers to complete the following...
V. Global test on the set of independent variables (Testing the multiple regression model)
Step-1: Ho : ======0
H1 : Not all the β’s are 0
Step-2: Here the level of significance is ,α = .05
Step-3: F-test statistic will be used here.
Step-4: Decision rule...
ﬁt? Justify. (b) Use the stepwise regressionanalysis given in Exhibit 1.2 to answer the following questions: (i) Write down the ﬁnal model of the multivariate regressionanalysis. (ii) Evaluate the model ﬁt of the ﬁnal model. (iii) Comment on the statistical signiﬁcance of the parameter estimates...
variables are ones we may want to watch more closely.
2. Perform a Multiple Linear Regressionanalysisusing all the explanatory variables AND perform a residual analysisusing the graphs.
Multiple linear regression results:
edge‟ competitively with regards to its customer base and its future planning, especially as far as where and how it should target its various marketing ventures down the road.
Using MINITAB perform the regression and correlation analysis for the data on CREDIT BALANCE (Y) and...
The following paragraph will estimate the model and its interpretation will be contrast of significance, shall be assessed globally according to R2, will be the graphic representation of expected values and the series of waste and contrast the hypothesis of normality of the...
concert’s speaker system. The desired level of significance was a = .05. The results of their ANOVA tests are shown:
Source of Variation SS df MS F P-value
Amplifier 99.02344 99.02344 0.005718
Position 93.98698 31.32899 3.215807...
MATH 533(Applied Managerial Statistics) Project AJ Davis Department Stores; Part C: Regression and Correlation AnalysisUsing MINITAB perform the regression and correlation analysis for the data on CREDIT BALANCE (Y) and SIZE (X) by answering the following. 1.
Generate a scatterplot for...
) and leverage (LEVER) are not significant at typical significancelevels. The next step in this analysis is to estimate Equation (3) using various subsets of the sample. First, we exclude the US firms and use only the 1150 non-US
TABLE 3 REGRESSIONANALYSIS FOR TOTAL RISK CHANGESWITH...
the numbers, but it will change the way they are displayed
and how many digits are displayed after the decimal point for statistical analyses you perform on the
5. Using grades.sav, search for a student who got 121 on the final exam. What is his or her name?
6. Why is each of the following...
following pages, we will study regressionanalysis and how it can be used in demand estimation and how to find the coefficients of demand equation. The question is how these coefficients are estimated, or generally how demand is estimated.
Page 1 of 22
The complete regressionanalysis as calculated with Minitab is shown in the box below.
a.) To determine the equation of the regression line to predict the Consumer Confidence Index (CCI) from the Median Household Income the following is calculated using...
table we find that at 95% critical value for Price vs. Age = 4.139 while F = 68.20. Since the F (model) for Price vs. Age = 68.20 which is greater than F.05 =4.139 we can reject the null hypothesis in favor of the alternative hypothesis at level of significance 0.05.
ANALYSIS OF RESIDUALS
(14.16). Compute the estimated standard deviation of b1 using equation (14.18). Use the t test to test the following hypotheses (α .05): H 0: H a:
Use the F test to test the hypotheses in part (d) at a .05level of significance. Present the results in the analysis of variance...
: use 1/y as the
dependent variable instead of y.
Perform a transformation of variables and use
regressionanalysis with the general linear
E( y ) = β 0 β 1
Dr. Kameliia Petrova
School of Business and Economics
(intercept and x) so we use t(5-3)=t(2).
For example, for HH SIZE p = =TDIST(0.796,2,2) = 0.5095.
TEST HYPOTHESIS ON A REGRESSION PARAMETER
Here we test whether HH SIZE has coefficient β2 = 1.0.
Example: H0: β2 = 1.0 against Ha: β2 ≠ 1.0 at significancelevel α = .05.
t = (b2 - H0 value...
c. 0 regression coefficients
d. 0 correlation matrix
Objective: Interpret the results of a multiple regression.
25. Multiple regressionanalysis assumes or requires that
a. 0 the dependent variable is measured using an ordinal, interval, or ratio scale
b. 0 the residuals follow an...