Statistics in Python Quiz for Grade 8 Students

📚 Quick Study Guide

• 🔢 Mean: The average of a set of numbers. Calculated by adding all the numbers and dividing by the count of numbers. Formula: $\text{Mean} = \frac{\text{Sum of numbers}}{\text{Number of numbers}}$
• 📊 Median: The middle value in a sorted list of numbers. If there's an even number of values, it's the average of the two middle numbers.
• ✨ Mode: The value that appears most frequently in a dataset. A dataset can have no mode, one mode, or multiple modes.
• 📈 Range: The difference between the largest and smallest values in a dataset. Formula: $\text{Range} = \text{Largest Value} - \text{Smallest Value}$

🧪 Practice Quiz

1. Which of the following is the correct formula for calculating the mean of a dataset?
   1. Sum of numbers + Number of numbers
   2. Sum of numbers - Number of numbers
   3. $\frac{\text{Sum of numbers}}{\text{Number of numbers}}$
   4. $\frac{\text{Number of numbers}}{\text{Sum of numbers}}$


2. What is the median of the following dataset: 5, 2, 8, 1, 9?
   1. 2
   2. 5
   3. 8
   4. 1


3. In the dataset: 3, 6, 8, 6, 2, 6, 9, what is the mode?
   1. 2
   2. 6
   3. 8
   4. 9


4. What does the range represent in a dataset?
   1. The average of the numbers
   2. The middle value
   3. The difference between the largest and smallest values
   4. The most frequent number


5. Calculate the range of the following dataset: 12, 5, 18, 7, 22.
   1. 10
   2. 17
   3. 15
   4. 27


6. What is the median of the dataset: 4, 8, 1, 6, if sorted?
   1. 1
   2. 4
   3. 6
   4. 8


7. Which of the following is NOT a measure of central tendency?
   1. Mean
   2. Median
   3. Mode
   4. Range