Dataset: 4 7 3 9 7 5 7 (7 values)
Show ALL your work in the boxes below. Refer to the worked example on the board!
Step 1: Add all values
Step 2: Write the sum and count
Step 1: Write values in ORDER
Step 2: Cross off one from each end until one remains
Count how many times each value appears:
Find maximum and minimum:
Fill in your answers and then answer the analysis questions.
| Mean | Median | Mode | Range |
|---|---|---|---|
Are the mean and median the same or different? Same Different
Which measure do you think best describes this dataset? Circle one: Mean Median Mode
Explain why:
Add the value 50 to the dataset: 4 7 3 9 7 5 7 50
Which measure changed the most when 50 was added? Why?
A shoe store wants to know which shoe size to order the most of. Should they use mean, median, or mode? Why?
Five friends' weekly allowances: $5, $5, $6, $7, $30. Which measure best describes the "typical" allowance? Why?
Find 7 numbers at home (ages of family members, temperatures this week, prices of items, etc.). Calculate all four measures!