Basic Statistics For Business And Economics 7th Canadian Edition By Douglas A. Lind Test bank

(iii) Qualitative variables can be further divided into discrete and continuous variables.

1. (i), (ii) and (iii) are all correct statements.
2. (i) and, (ii) are correct statements but not (iii).
3. (i) and, (iii) are correct statements but not (ii).
4. (ii) and, (iii) are correct statements but not (i).

 

9. The main purpose of descriptive statistics is to:
   1. Summarize data in a useful and informative manner.
   2. Make inferences about a population.
   3. Determine if the data adequately represents the population.
   4. Gather or collect data.

 

10. When TV advertisements report that "2 out of 3 dentists surveyed indicated they would recommend Brand X toothpaste to their patients," an informed consumer may question the conclusion because:
    1. The results were incorrectly computed.
    2. Dentists were not really surveyed.
    3. The conclusion does not include the total number of dentists surveyed.
    4. The conclusion is not illustrated with a graph.

 

11. What is a portion or part of a population called?
    1. Random sample
    2. Sample
    3. Tally
    4. Frequency distribution

 

12. A marketing class of 50 students evaluated the instructor using the following scale: superior, good, average, poor, and inferior. The descriptive summary showed the following survey results: 2% superior, 8% good, 45% average, 45% poor, and 0% inferior.
    1. The instructor's performance was great!!!
    2. The instructor's performance was inferior.
    3. Most students rated the instructor as poor or average.
    4. No conclusions can be made.

 

13. Which word is NOT part of the definition of descriptive statistics?
    1. Organizing
    2. Analyzing
    3. Presenting
    4. Predicting

 

14. A marketing class of 50 students evaluated the instructor using the following scale: superior, good, average, poor, and inferior. The descriptive summary showed the following survey results: 42% superior, 28% good, 25% average, 5% poor, and 0% inferior.
    1. The instructor's performance was great!!!
    2. The instructor's performance was inferior.
    3. Most students rated the instructor as poor or average.
    4. No conclusions can be made.

 

15. Colleen Waite, Director of General Canadian Sales, is concerned by a downward sales trend. Specifically, their customer base is stable at 2,200, but they are purchasing less each year. She orders her staff to search for causes of the downward trend by selecting a focus group of 50 customers.
    1. The focus group of 50 customers represents a sample.
    2. The focus group of 50 customers represents a population.
    3. The focus group of 50 customers represents an inferential statistic.
    4. The focus group of 50 customers represents a census.

 

16. Colleen Waite, Director of General Canadian Sales, is concerned by a downward sales trend. Specifically, their customer base is stable at 2,200, but they are purchasing less each year. She orders her staff to search for causes of the downward trend by selecting a focus group of 50 customers.
    1. The 2,200 customers represent a sample.
    2. The 2,200 customers represent a population.
    3. The 2,200 customers represent an inferential statistic.