3 Questions
Which of the following is NOT a measure of center in statistics?
Range
What is the formula for calculating the standard deviation of a sample?
sqrt((sum of squared differences from the mean) / (number of data values - 1))
Which of the following is a characteristic of a normal distribution?
Symmetric
Study Notes
Measures of Center
- Mode is a measure of center that represents the most frequently occurring value in a dataset.
Standard Deviation
- The formula for calculating the standard deviation of a sample is: σ = √[(Σ(xi - x̄)²) / (n - 1)].
- This formula calculates the spread of a sample dataset from its mean value.
Normal Distribution
- A characteristic of a normal distribution is that it is symmetric and bell-shaped, with the mean, median, and mode all equal.
- In a normal distribution, about 68% of the data falls within one standard deviation of the mean.
Test your knowledge of AP statistics unit 1 with this quiz! Determine which measure of center is NOT used in statistics, identify the formula for calculating sample standard deviation, and recognize the characteristics of a normal distribution.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
