C207 DATA-DRIVEN DECISION MAKING Questions with Correct
Solutions
Question:
1. There are two types of statistics (Analytics)
Answer:
Descriptive and inferential
Question:
2. Descriptive statistics are used to _____
Answer:
Inform / Explanatory
Question:
3. Inferential statistics are used to _____
Answer:
Predict / Trend
Question:
4. Name the 4 levels of measurement
Answer:
(NOIR) Nominal, Ordinal, Interval, Ratio
Question:
5. What is continuous data with a unique zero point?
Answer:
Ratio
Question:
6. Orders data at equal distance apart
Answer:
Interval
Question:
7. Place qualitative objects in some kind or order
Answer:
Ordinal
,Question:
8. Identify, Group, or Categorize
Answer:
Nominal
Question:
9. Outliers create this type of error
Answer:
Out-of Range
Question:
10. Unpredictable error
Answer:
Random Error - No correlation
Question:
11. Error may occur from missing data (Ex. space not filled in)
Answer:
Omission Error - Distorted results
Question:
12. This error repeats itself
Answer:
Systematic Error - Skewed results
Question:
13. What is the process of quality control?
Answer:
Reduce / minimize errors
Question:
14. All variable measurements and manipulations are under the researcher's control
Answer:
Experimental study
Question:
15. Used when impractical or impossible to control the conditions of the study
,Answer:
Observational Study
Question:
16. Participants are not told if they are in the treatment group or control group
Answer:
Blind Study
Question:
17. The procedure the researcher applies to each subject
Answer:
Treatments
Question:
18. Neither the treatment allocator nor the participants know who is in the treatment group
or control group
Answer:
Double blind study
Question:
19. Questions favor an outcome or the interviewer asks questions that favor an outcome
Answer:
Information Bias
Question:
20. The average outcome (payoff) when the future includes scenarios that may or may not
happen
Answer:
Expected Monetary Value (EMV) Analysis
Question:
21. Observation points that are distant from other observations
Answer:
Outliers Note: Can be included or excluded in analysis (causes skewness)
Question:
22. Bias that occurs from not selecting a random sample
Answer:
Measurement bias
, Question:
23. Bias introduced because respondents believe it will be beneficial if selected
Answer:
Conscious bias
Question:
24. Each of the four quartile groups a population can be divided
Answer:
Quartiles
Question:
25. Measures the difference between the third and the first quartile
Answer:
IQR: Inter-quartile range Note: must be ordered in lowest to highest value
Question:
26. Used to study the composition of data set and examine the distribution
Answer:
Box plot
Question:
27. There are six toll booths to enter the highway. What probability does each toll booth
worker have of getting the next customer?
Answer:
1 customer and 6 booths = 1/6 or 16.7%
Question:
28. The order you pick you sample in does not matter
Answer:
Combination Picking employees for a shift. Order doesn't matter
Question:
29. When given P(A) given P(B), you can use this to find the P(B) given P(A)
Answer:
Bayes Theorem You must know P(A), P(B), P(A) given B
Question:
30. Apply this rule when looking for two events occurring (AND)
Solutions
Question:
1. There are two types of statistics (Analytics)
Answer:
Descriptive and inferential
Question:
2. Descriptive statistics are used to _____
Answer:
Inform / Explanatory
Question:
3. Inferential statistics are used to _____
Answer:
Predict / Trend
Question:
4. Name the 4 levels of measurement
Answer:
(NOIR) Nominal, Ordinal, Interval, Ratio
Question:
5. What is continuous data with a unique zero point?
Answer:
Ratio
Question:
6. Orders data at equal distance apart
Answer:
Interval
Question:
7. Place qualitative objects in some kind or order
Answer:
Ordinal
,Question:
8. Identify, Group, or Categorize
Answer:
Nominal
Question:
9. Outliers create this type of error
Answer:
Out-of Range
Question:
10. Unpredictable error
Answer:
Random Error - No correlation
Question:
11. Error may occur from missing data (Ex. space not filled in)
Answer:
Omission Error - Distorted results
Question:
12. This error repeats itself
Answer:
Systematic Error - Skewed results
Question:
13. What is the process of quality control?
Answer:
Reduce / minimize errors
Question:
14. All variable measurements and manipulations are under the researcher's control
Answer:
Experimental study
Question:
15. Used when impractical or impossible to control the conditions of the study
,Answer:
Observational Study
Question:
16. Participants are not told if they are in the treatment group or control group
Answer:
Blind Study
Question:
17. The procedure the researcher applies to each subject
Answer:
Treatments
Question:
18. Neither the treatment allocator nor the participants know who is in the treatment group
or control group
Answer:
Double blind study
Question:
19. Questions favor an outcome or the interviewer asks questions that favor an outcome
Answer:
Information Bias
Question:
20. The average outcome (payoff) when the future includes scenarios that may or may not
happen
Answer:
Expected Monetary Value (EMV) Analysis
Question:
21. Observation points that are distant from other observations
Answer:
Outliers Note: Can be included or excluded in analysis (causes skewness)
Question:
22. Bias that occurs from not selecting a random sample
Answer:
Measurement bias
, Question:
23. Bias introduced because respondents believe it will be beneficial if selected
Answer:
Conscious bias
Question:
24. Each of the four quartile groups a population can be divided
Answer:
Quartiles
Question:
25. Measures the difference between the third and the first quartile
Answer:
IQR: Inter-quartile range Note: must be ordered in lowest to highest value
Question:
26. Used to study the composition of data set and examine the distribution
Answer:
Box plot
Question:
27. There are six toll booths to enter the highway. What probability does each toll booth
worker have of getting the next customer?
Answer:
1 customer and 6 booths = 1/6 or 16.7%
Question:
28. The order you pick you sample in does not matter
Answer:
Combination Picking employees for a shift. Order doesn't matter
Question:
29. When given P(A) given P(B), you can use this to find the P(B) given P(A)
Answer:
Bayes Theorem You must know P(A), P(B), P(A) given B
Question:
30. Apply this rule when looking for two events occurring (AND)
