Real-World Examples of Mean Average for Grade 7 Math

📚 Quick Study Guide

• 🔢 Definition: The mean (average) is found by adding all the numbers in a set and then dividing by the total number of values.
• ➕ Formula: Mean = $\frac{\text{Sum of all values}}{\text{Number of values}}$
• 💯 Real-World Applications: Calculating average test scores, finding the average height of students, or determining the average rainfall in a month.
• ⚠️ Important Note: The mean can be affected by outliers (very high or very low numbers).

Practice Quiz

1. What is the mean of the following test scores: 75, 80, 92, 88, and 95?
   1. 75
   2. 84
   3. 86
   4. 90
2. A basketball team scored the following points in 5 games: 60, 72, 58, 80, and 75. What was the average number of points scored per game?
   1. 65
   2. 70
   3. 72
   4. 75
3. What is the mean number of siblings for a group of students where 3 have 1 sibling, 4 have 2 siblings, and 2 have 0 siblings?
   1. 1
   2. 1.22
   3. 1.33
   4. 2
4. A store sold the following number of ice cream cones in a week: 25, 30, 28, 32, 20, 35, and 40. What was the average number of ice cream cones sold per day?
   1. 28
   2. 30
   3. 32
   4. 35
5. Sarah recorded the temperature each day for a week. The temperatures were: 20°C, 22°C, 25°C, 23°C, 21°C, 24°C, and 26°C. What was the average temperature for the week?
   1. 22°C
   2. 23°C
   3. 23.5°C
   4. 24°C
6. A group of friends went bowling. Their scores were: 120, 135, 110, 140, and 125. What was the average bowling score?
   1. 125
   2. 126
   3. 130
   4. 135
7. John wants to find the average height of his tomato plants. He measured 4 plants, and their heights are: 15 cm, 18 cm, 21 cm, and 24 cm. What is the average height of his tomato plants?
   1. 18 cm
   2. 19.5 cm
   3. 20 cm
   4. 21 cm