WG
,Part 1: Questions 1–50
1. What is the primary purpose of data-driven decision making?
A. To replace managerial judgment
B. To support decisions using empirical evidence
C. To eliminate uncertainty completely
D. To automate all business processes
✅ Correct Answer: B
2. Which type of data is numerical and measurable?
A. Qualitative
B. Categorical
C. Quantitative
D. Ordinal
✅ Correct Answer: C
3. Which measure best represents the center of a skewed distribution?
A. Mean
B. Mode
C. Median
D. Range
✅ Correct Answer: C
4. What does a p-value represent in hypothesis testing?
A. Probability the null hypothesis is true
B. Probability results occurred by chance
C. Level of confidence in the sample
D. Strength of the dependent variable
✅ Correct Answer: B
,5. A null hypothesis typically states that:
A. A relationship exists
B. No difference or relationship exists
C. Data is normally distributed
D. The sample is biased
✅ Correct Answer: B
6. Which statistical test compares means of two independent groups?
A. Paired t-test
B. ANOVA
C. Chi-square
D. Independent t-test
✅ Correct Answer: D
7. What scale of measurement has a true zero?
A. Nominal
B. Ordinal
C. Interval
D. Ratio
✅ Correct Answer: D
8. What does standard deviation measure?
A. Central tendency
B. Spread of data
C. Sample size
D. Correlation strength
✅ Correct Answer: B
, 9. Which visualization best shows distribution of a single variable?
A. Scatter plot
B. Histogram
C. Pie chart
D. Line graph
✅ Correct Answer: B
10. What is data normalization used for?
A. Increasing variance
B. Eliminating outliers
C. Standardizing data scales
D. Changing data types
✅ Correct Answer: C
11. Which sampling method ensures every population member has equal chance?
A. Convenience
B. Stratified
C. Cluster
D. Simple random
✅ Correct Answer: D
12. What does correlation measure?
A. Causation
B. Difference between means
C. Strength and direction of relationship
D. Statistical significance
✅ Correct Answer: C
,Part 1: Questions 1–50
1. What is the primary purpose of data-driven decision making?
A. To replace managerial judgment
B. To support decisions using empirical evidence
C. To eliminate uncertainty completely
D. To automate all business processes
✅ Correct Answer: B
2. Which type of data is numerical and measurable?
A. Qualitative
B. Categorical
C. Quantitative
D. Ordinal
✅ Correct Answer: C
3. Which measure best represents the center of a skewed distribution?
A. Mean
B. Mode
C. Median
D. Range
✅ Correct Answer: C
4. What does a p-value represent in hypothesis testing?
A. Probability the null hypothesis is true
B. Probability results occurred by chance
C. Level of confidence in the sample
D. Strength of the dependent variable
✅ Correct Answer: B
,5. A null hypothesis typically states that:
A. A relationship exists
B. No difference or relationship exists
C. Data is normally distributed
D. The sample is biased
✅ Correct Answer: B
6. Which statistical test compares means of two independent groups?
A. Paired t-test
B. ANOVA
C. Chi-square
D. Independent t-test
✅ Correct Answer: D
7. What scale of measurement has a true zero?
A. Nominal
B. Ordinal
C. Interval
D. Ratio
✅ Correct Answer: D
8. What does standard deviation measure?
A. Central tendency
B. Spread of data
C. Sample size
D. Correlation strength
✅ Correct Answer: B
, 9. Which visualization best shows distribution of a single variable?
A. Scatter plot
B. Histogram
C. Pie chart
D. Line graph
✅ Correct Answer: B
10. What is data normalization used for?
A. Increasing variance
B. Eliminating outliers
C. Standardizing data scales
D. Changing data types
✅ Correct Answer: C
11. Which sampling method ensures every population member has equal chance?
A. Convenience
B. Stratified
C. Cluster
D. Simple random
✅ Correct Answer: D
12. What does correlation measure?
A. Causation
B. Difference between means
C. Strength and direction of relationship
D. Statistical significance
✅ Correct Answer: C
