how would I make a tslly table for the number of students in th third, fourth, and fifth-grade classes: 26, 25, 27, 27, 26,28,27

Here's a good example of a tally table.

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25 . . . |

26 . . . ||

To create a tally table for the number of students in the third, fourth, and fifth-grade classes, you can follow these steps:

1. Start by listing all the unique values of the number of students in the classes: 26, 25, 27, 28.
2. Draw a horizontal line next to each unique value.
3. For each value, make a tally mark (vertical line) on the horizontal line. Every fifth mark, add a diagonal line across the previous four marks.
- For example, if the value is 26, you would make four vertical tally marks and one diagonal line across those four marks.
- If the value is 25, you would make five vertical tally marks without any diagonal lines.
- Repeat this process for each unique value.
4. Once you have represented all the unique values using tally marks, write the corresponding counts next to each value.
- For example, next to 26, you would write the count as 4.
- Next to 25, you would write the count as 5.
- Repeat this process for each unique value.

Here is the tally table for the number of students in the third, fourth, and fifth-grade classes you provided:

| Number of Students | Tally | Count |
|--------------------|-------|-------|
| 26 | |||| | 4 |
| 25 | ||||| | 5 |
| 27 | ||||| | 5 |
| 28 | |||| | 4 |

Please note that this tally table represents the counts for each unique value in the given data.