IIBA® – CBDA Exam Free Cloned Questions

12


Created by aboozarkordi

IIBA® – CBDA Exam Free Cloned Questions

1 / 20

1. Imagine you want to compare the market share of different smartphone brands in a specific region. What type of chart would effectively illustrate the percentage distribution of market share for each brand?

2 / 20

2. A business analyst has prepared a map to show variation in different states. She has labeled sales with S and profit as P with their values and the state name. On what basis has she colored the states?

3 / 20

3. Consider the dataset: 14, 18, 14, 22, 25, 18, 22, 25, 30, 35. What can be said about the mean, median, and mode?

4 / 20

4. For a normal distribution with a mean of 70 and a standard deviation of 5, what is the probability that a randomly selected value is greater than 75?

5 / 20

5. What does the Law of Large Numbers state in the context of statistics?

6 / 20

6. A researcher calculates a 95% confidence interval for the mean height of a population to be (65 cm, 75 cm). What does this interval signify?

7 / 20

7. What is the mode corresponding to observations 4,7, 4, 2,7,4, 2,2,7?

8 / 20

8. In a standard normal distribution (z-distribution), what is the probability that a randomly selected value falls within one standard deviation of the mean (between -1 and 1)?

9 / 20

9. A company wants to estimate the average satisfaction score of its customers. Which sampling method is most appropriate for obtaining a representative sample from its customer database?

10 / 20

10. In a positively skewed distribution, how do the mean, median, and mode compare?

11 / 20

11. You want to represent the correlation between two variables, such as hours spent studying and exam scores, for a group of students. Which type of chart would help visualize the strength and direction of the relationship?

12 / 20

12. You have survey data that includes responses from participants in different age groups regarding their preferred mode of transportation. Which type of chart would be suitable for displaying the distribution of preferences among different age categories?

13 / 20

13. A study reports a 90% confidence interval for the mean time spent on a task as (15 minutes, 25 minutes). What would happen to the confidence interval if the sample size is increased while keeping other factors constant?

14 / 20

14. What happens to the mean, median, and mode if each data point in a dataset is multiplied by a constant?

15 / 20

15. What is an assumption for a chi-squared test of independence?

16 / 20

16. Suppose you have data on the distribution of household expenses across different categories, such as rent, utilities, groceries, and entertainment. Which type of chart would effectively represent the proportions of each expense category in the overall budget?

17 / 20

17. You are tasked with presenting the sales performance of a retail store over the past year. What type of chart would be most appropriate for showcasing monthly sales trends and identifying seasonal patterns?

18 / 20

18. A claim has been made that the risk of companies admitted to the stock exchange is less than 1000. What are the hypotheses for the test?

19 / 20

19. A researcher is studying the impact of a new teaching method in a school district and wants to ensure representation from each grade level. What sampling technique is suitable for achieving this goal?

20 / 20

20. A delivery service has three routes with daily delivery capacities as follows: Route 1: 50 packages, Route 2: 40 packages, Route 3: 30 packages. If each route has a delivery time of 2 hours, what is the primary goal of optimizing the delivery schedule using operational research techniques?

Leave a Reply