MMGT6012 - Practice Final Exam - MC Answers

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PRACTICE EXAM Page 2 Section A. Multiple Choice Questions (20 questions worth 2 marks each). Circle the correct answer. 1. What is a type I error? a. Not rejecting the null when the null is false b. Rejecting the null when the null is false c. Rejecting the null when the null is true d. Not rejecting the alternative when the alternative is false e. None of the above 2. A real estate agent sells a house for $520,000, but on average houses, in the area sell for $845,000 with a standard deviation of $220,000. What is the standardised (Z) score for the sale price of the house? a. 1.877 b. 1.477 c. -1.877 d. -1.477 e. None of the above 3. For children between the ages of 18 months and 29 months, there is approximately a linear relationship between “height” and “age”. The relationship can be represented by: Y = 64.93 + 0.63(x), where Y represents height (in centimetres) and X represents age (in months). Joseph is 22.5 months old and is 80 centimetres tall. What is Joseph’s residual? a. 79.1 b. -0.9 c. +0.9 d. 56.6 e. 64.93 4. For children, there is approximately a linear relationship between “height” and “age”. One child was measured monthly. Her height was 75 cm at 3 years of age and 85 cm when she was measured 18 months later. A line was fit to her data. The slope of this line is approximately: a. 0.55 cm/month b. 10 cm/month c. 25 cm/month d. 1.57 cm/month e. 2.1 cm/month 5. Preference for mode of transport (where commuters are required to place car, bus and train in order of most preferred to least preferred) is an example of what kind of data? a. Nominal b. Normal c. Ratio d. Ordinal e. Interval

PRACTICE EXAM Page 3 6. There is an approximate linear relationship between the height of females and their age (from 5 to 18 years) described by: height = 50.3 + 6.01(age) Where height is measured in cm and age in years. Which of the following is not correct? a. The estimated height of a child who is 10 years old is about 110 cm. b. The estimated intercept is 50.3 cm which implies that children reach this height when they are 50.3/6.01=8.4 years old. c. The average height of children when they are 5 years old is about 50% of the average height when they are 18 years old. d. My niece is about 8 years old and is about 115 cm tall. She is taller than average. e. On average, children between 5 and 18 grow 6.01 cm per year. 7. In hypothesis test, the null hypothesis is: a. Always false. b. A change from the accepted state. c. Never accepted. d. Results in something dying. e. Defines the current state of nature. 8. What is the standard deviation for the following number range? 4 41 11 17 7 47 10 16 17 32 36 a. 14.6 b. 14.8 c. 10.8 d. 11.1 e. None of the above 9. Which of the following are properties of ratio data? a. Additive b. Divisable c. Fixed zero point d. All of the above e. None of the above 10. Boxplots are useful in identifying? a. Intervals b. Medians c. Homoskedasticity d. Multicolinearity e. None of the above

PRACTICE EXAM Page 4 11. Elasticities can be calculated by using what model form? a. Multiplicative model b. Exponential model c. Quadratic model d. All of the above e. None of the above 12. Where will the maximum value of the object function occur for the following linear programming model, if the objective function is P = 5x + 7y? a. Point A b. Point B c. Point C d. Point D e. Point E 13. A problem has 3 decision variables and 5 constraints. How many basic variables are used to solve this problem? a. 3 b. 5 c. 8 d. 2 e. None of the above 14. Linear programming operates under deterministic assumptions. What does this mean? a. Values of outputs are known with certainty. b. Values of inputs are known with certainty. c. Values of inputs are unknown. d. Values of outputs are unknown. e. Values represent a unique solution. 15. The correct correlation statistic for non-normal data is what? a. Pearson b. Spearman c. R-squared d. Chi-squared e. None of the above

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PRACTICE EXAM Page 5 16. Data analysis is the process of: a. Running statistical models b. Making recommendations c. Answering questions d. Creating a set of facts with meaning e. Making educated guesses 17. Which of the following is not affected by outliers: a. Mean b. Mode c. Standard Deviation d. All of the above e. None of the above 18. If 65% of the data is plus or minus one standard deviation, the data has what sort of distribution? a. Normal b. Poisson c. Binomial d. Exponential e. Not enough information to tell 19. Consider the following crosstab (with a Chi-Square of 12.831, sig. = 0.005) where the researcher looked at the amount of speed at which a package is delivered using various methods. Bike Car Truck Quick 57% 75% 50% Slow 43% 25% 50% Which of the below statements is most correct? a. There is no significant relationship between delivery speed and delivery mode b. There is a significant relationship between delivery speed and car c. There is a significant relationship and using a car provides quick delivery speed d. There is a significant relationship and quick delivery speed result in a car being used e. There is a significant relationship, but there is no difference between truck and bike 20. Which of the following is not an assumption of regression analysis? a. Normality of the error b. Constant variance c. Linearity d. Normality of the dependent variable e. All of the above - THIS IS THE FINAL QUESTION FOR SECTION A -

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