4. Display Data in Frequency Tables and Histograms
Sign In
Start by completing the frequency table, then make the histogram.
Example Frequency Table:
| Time (in seconds) | Tally | Frequency |
|---|---|---|
| 6 - 10 | |||| | 5 |
| 11 - 15 | |||| | 4 |
| 16 - 20 | |||| | | 6 |
| 21 - 25 | |||| | 5 |
We want to complete the frequency table and histogram. Let's do these one at a time!
The minimum value is 8 and the maximum value is 25. In this case, intervals of 5 seem reasonable. Let's list the intervals in the first column of our frequency table.
| Time (in seconds) | Tally | Frequency |
|---|---|---|
| 6 - 10 | ||
| 11 - 15 | ||
| 16 - 20 | ||
| 21 - 25 |
Now we should count the number of values in each interval. ccccccc 15 & 25 & 11 & 8 & 10 & 21 & 18 23 & 19 & 9 & 14 & 16 & 24 & 18 10 & 16 & 24 & 18 & 9 & 14 Looking at the data, we can see that there is 5 values in the first interval, 4 values in the second interval, 6 values in the third interval, and 5 values in the fourth interval. Using this information we can complete our table.
| Time (in seconds) | Tally | Frequency |
|---|---|---|
| 6 - 10 | |||| | 5 |
| 11 - 15 | |||| | 4 |
| 16 - 20 | |||| | | 6 |
| 21 - 25 | |||| | 5 |
