1. **State the problem:** We have a set of test scores: 70, 55, 61, 80, 85, 72, 65, 40, 74, 68, and 84. We need to complete the frequency table for score intervals and then use it to construct a frequency histogram.
2. **Organize scores into intervals:** The intervals are 40-49, 50-59, 60-69, 70-79, and 80-89.
3. **Count frequencies:**
- 40-49: Scores are 40 → frequency = 1
- 50-59: Scores are 55 → frequency = 1
- 60-69: Scores are 61, 65, 68 → frequency = 3
- 70-79: Scores are 70, 72, 74 → frequency = 3
- 80-89: Scores are 80, 84, 85 → frequency = 3
4. **Complete the table with tally marks and frequencies:**
| Score | Tally | Frequency |
|--------|---------|-----------|
| 40-49 | | | 1 |
| 50-59 | | | 1 |
| 60-69 | ||| | 3 |
| 70-79 | ||| | 3 |
| 80-89 | ||| | 3 |
5. **Constructing the frequency histogram:**
- The horizontal axis represents the score intervals.
- The vertical axis represents frequency (number of scores).
- For each interval, draw a bar up to the frequency count.
- For example, the bar for 40-49 will be 1 unit high, for 60-69 will be 3 units high, etc.
This completes the frequency table and provides the data needed to draw the histogram.
Frequency Histogram Be954B
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