11. Fill in the blank: The median is the _____ value in a dataset.
- middle
- average
- minimum
- maximum
12. A data professional is working with the following dataset: 2, 2, 4, 7, 10. What is the mean of the dataset?
- 10
- 2
- 5
- 4
13. What concept best describes the standard deviation, variance, and range?
- Measures of central tendency
- Measures of dispersion
- Measures of position
- Measures of frequency
14. A data professional is working with sales data. They want to measure the spread of their values from the mean of the dataset. What descriptive statistic do they use?
- Mode
- Median
- Standard deviation
- Quartile
15. A data professional is analyzing data about annual work income in dollars. They divide the data into quartiles: Q1 = $40,000, Q2 = $55,000, Q3 = $70,000. What is the interquartile range, or IQR, of their dataset?
- $40,000
- $15,000
- $55,000
- $30,000
16. A data professional is analyzing data about the employees of a corporation. They want to compute the average age of all employees in the dataset. What Python functions can they use? Select all that apply.
- describe()
- std()
- mean()
- max()
17. A data professional might use descriptive statistics to do which of the following? Select all that apply.
- Measure the center of a dataset
- Summarize the main features of a dataset
- Measure the spread of a dataset
- Collect a random sample of data from a population
18. What concept refers to a subset of data drawn from a larger population?
- Sample
- Variance
- Parameter
- Statistic
Shuffle Q/A 2
19. Fill in the blank: Measures of dispersion represent the _____ of a dataset.
- maximum value
- center
- spread
- minimum value
20. A data professional is analyzing weather data. Their dataset includes daily rainfall in inches for the previous five days: 1, 2.4, 3.2, 5, 2.8. What is the range of their dataset?
- 4
- 2.4
- 3.2
- 5