ADMS 3300 Study Guide - Final Guide: Tachykinin Receptor 1, Stepwise Regression, Homoscedasticity
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Consider the following reaction.
The figure below is a graph of AX/AS versus [X]/[S] = (mol% vinyl acetate units)/(mol% ethylene units) = q/p in the reaction above.
(a) Construct a graph similar to the one above from the following data. (Submit a file with a maximum size of 1 MB.)
[X]/[S] | AX/AS | [X]/[S] | AX/AS |
---|---|---|---|
0.098 | 0.375 | 0.330 | 1.171 |
0.161 | 0.591 | 0.488 | 1.713 |
0.218 | 0.786 | 0.660 | 2.303 |
(b) Use a least-squares spreadsheet such as this least-squares spreadsheet to find the slope and intercept and uncertainties sy, um, and ub of the calibration line in (a).
slope | = |
intercept | = |
sy | = |
um | = |
ub | = |
(c) From the equation of the line, find [X]/[S] for a measured value AX/AS = 2.01.
[X]/[S] =
Use ux = (sy / (abs(m))) ( (1/k) + (1/n) + ( (y â y)2 / m2Σ(xi â x)2 )
in your spreadsheet to find the standard uncertainty ux in the quotient [X]/[S].
ux =
The graph has 6 points with 4 degrees of freedom. Find the 95% confidence interval (= ±tux) for [X]/[S].
[X]/[S] ± ____
(d) From the uncertainty ub of the intercept, find the 95% confidence interval for the intercept. (Use the Student's t-table.)
95% confidence interval lower bound = | |
95% confidence interval upper bound = |
Does this interval include the theoretical value of zero? (Yes or No)
Question 1
Which of the following approaches to understanding and predicting consumer behavior depends primarily on the knowledge and experience of a firm's employees and its suppliers?
Test marketing and price experiments | ||
Analysis of historical data. | ||
Direct consumer surveys. | ||
Expert opinion. |
Question 2
In which of the following situations would reliance on expert opinion as a basis for a managerial decision be most preferred?
When the product being marketed is relatively new. | ||
When the level of economic activity can have a significant effect on the demand for the firm's output. | ||
When the product can be packaged with a variety of price and quality combinations. | ||
When the business in question serves as a supplier of inputs to other businesses, especially in multi-product situations where other strategies may be prohibitively expensive. |
Question 3
The approach to analyzing consumer behavior that asks consumers to rank and choose among different product attributes to reveal their relative valuation of different characteristics is called:
conjoint analysis. | ||
contingent valuation. | ||
the hedonic estimation technique. | ||
a direct consumer survey. |
Question 4
All of the following are limitations of direct consumer surveys except:
the possibility of response biases because survey respondents may not want to reveal their true preferences. | ||
the possibility that the type of questions asked may unintentionally bias the respondent's answers. | ||
the likelihood that respondents will deliberately and systematically mislead interviewers. | ||
the possibility that consumers' responses may not reflect their actual behavior in the market place. |
Question 5
Which of the following approaches to understanding and predicting consumer behavior does not actually solicit any information from potential customers?
Expert opinion. | ||
Test marketing. | ||
Analysis of historical data. | ||
Conjoint analysis. |
Question 6
Data collected on a sample of individuals with different characteristics at a specific point in time are called:
panel data. | ||
cross-section data. | ||
time series data. | ||
none of the above. |
Question 7
Which of the following approaches to understanding and predicting consumer behavior provides the most insight into how consumers can be expected to respond in an actual market setting?
Test marketing. | ||
Conjoint analysis. | ||
Expert opinion. | ||
Analysis of historical data. |
Question 8
An approach to analyzing consumer behavior in which consumer reaction to different prices is analyzed in a laboratory situation or a test market is called:
non-price experiments. | ||
focus groups. | ||
price experiments. | ||
none of the above. |
Question 9
Data collected on the same observation unit at a number of points in time are called:
panel data. | ||
time series data. | ||
cross-section data. | ||
none of the above. |
Question 10
A measure of how much the coefficient would vary in regressions based on different samples is called:
F-statistic. | ||
standard error of the estimated coefficient. | ||
t-statistic. | ||
partial F-statistic. |
Question 11
The test statistic used to test the hypothesis of whether a regression coefficient is significantly different from zero, holding all other independent variables constant, is called a(n):
t-test. | ||
F-test. | ||
multicollinearity test. | ||
autocorrelation test. |
Question 12
Regression analysis that analyzes the relationship between one dependent variable and several independent variables is called:
cluster analysis. | ||
correlation analysis. | ||
multiple regression analysis. | ||
simple regression analysis. |
Question 13
The ratio of the regression coefficient to its standard error is called:
F-statistic. | ||
t-statistic. | ||
coefficient of determination. | ||
partial F-statistic. |
Question 14
The coefficient of determination will range between what values?
-1 and +1 | ||
0 and 1 | ||
-3 and +3 | ||
none of the above |
Question 15
The range of values in which we can be confident that the true regression coefficient lies within a given degree of probability is called a:
confidence interval. | ||
logistic regression. | ||
prediction interval. | ||
none of the above. |
Question 16
The estimated regression equation is Y = 10 + 2.5X, if X =0 than the predicted value of Y is equal to
2.5 | ||
7.5 | ||
12.5 | ||
10 |