10.x.1. Mean (Average)

Try these first

1. 1.

   Calculate the mean of the dataset: 10, 20, 30, 40, 50.

   Hint

   Add all numbers together and divide by how many there are.

2. 2.

   What does the mean represent in a dataset?

   Hint

   Think about how you find the average in daily life.

3. 3.

   What is the formula for calculating the mean of a dataset?

   Hint

   Think of how you find the average.

4. 4.

   True or False: The mean is the middle value when data is sorted.

   • True
   • False

   Hint

   Remember the definitions of mean and median.

5. 5.

   A company has five employees with salaries of $40,000,$50,000, $60,000,$70,000, and $80,000. What is the mean salary? Discuss the implications of that mean if one employee earns$150,000.

   Hint

   Consider how one high value affects the average in a small group.

6. 6.

   A student scores the following grades across 10 subjects: 90, 85, 78, 88, 92, 75, 80, 83, 100, and 70. Calculate the mean score and reflect on its representation.

   Hint

   Analyze distribution and consider variability in performance!