### Example 1

Mr. Halls test scores:

77, 99, 100, 67, 90, 55, 86,

78, 72, 48, 27, 88, 24, 95

60, 63, 82, 94, 82

24, 27, 78, 55, 60, 63, 67, 72, 77, 78, 82,

82, 86, 88, 90, 94, 95, 99, 100

20 30 40 50 60 70 80 90 100

24 60 78 90 100

Range: 76%

Inter Quartile range: 30%

- Step 1: Put test scores least to greatest.
- Step 2: Make a number line with test scores.
- Step 3: Put a dot at the min. and max. test score.
- Step 4: Make a line at the median test score.
- Step 5: Make a line at the lower and upper quartiles. Take the median of the lower half and upper half of test scores.
- Step 6: make a box with the lines.