Which frequency table shows the test times (in minutes) for a reading test?
81, 63, 61, 58, 72, 70, 79, 68, 82, 64, 54, 82, 72, 63, 64, 76, 57, 65, 73, 58
A. table aThe first column has the title Test Time in Minutes. The second column has the title Tally. The third column has the title Frequency. The first row below the titles reads 50 to 59, 7 tally marks, 7. The next row reads 60 to 69, 3 tally marks, 3. The next row reads 70 to 79, 6 tally marks, 6. The last row reads 80 to 89, 4 tally marks, 4.
B. table bThe first column has the title Test Time in Minutes. The second column has the title Tally. The third column has the title Frequency. The first row below the titles reads 50 to 59, 4 tally marks, 4. The next row reads 60 to 69, 7 tally marks, 7. The next row reads 70 to 79, 6 tally marks, 6. The last row reads 80 to 89, 3 tally marks, 3.
C. table cThe first column has the title Test Time in Minutes. The second column has the title Tally. The third column has the title Frequency. The first row below the titles reads 50 to 59, 8 tally marks, 8. The next row reads 60 to 69, 5 tally marks, 5. The next row reads 70 to 79, 4 tally marks, 4. The last row reads 80 to 89, 7 tally marks, 7.
D. table dThe first column has the title Test Time in Minutes. The second column has the title Tally. The third column has the title Frequency. The first row below the titles reads 50 to 59, 6 tally marks, 6. The next row reads 60 to 69, 7 tally marks, 7. The next row reads 70 to 79, 3 tally marks, 3. The last row reads 80 to 89, 4 tally marks, 4.
B. table b shows the correct frequency table for the test times (in minutes) for a reading test.
Based on the given test times, the correct frequency table would be:
B. table b
- The first column has the title Test Time in Minutes.
- The second column has the title Tally.
- The third column has the title Frequency.
- The first row below the titles reads 50 to 59, 4 tally marks, 4.
- The next row reads 60 to 69, 7 tally marks, 7.
- The next row reads 70 to 79, 6 tally marks, 6.
- The last row reads 80 to 89, 3 tally marks, 3.
To find the frequency table for the test times in minutes, we need to tally the number of times each time interval occurs.
Let's create a table to organize the data:
Test Time in Minutes | Tally | Frequency
---------------------|-------|----------
50 to 59 | |
60 to 69 | |
70 to 79 | |
80 to 89 | |
Now, let's go through the given test times and record the tally marks for each time interval:
81, 63, 61, 58, 72, 70, 79, 68, 82, 64, 54, 82, 72, 63, 64, 76, 57, 65, 73, 58
Looking at the data, we can count the number of times each time interval occurs:
- 50 to 59: 0
- 60 to 69: 3 (63, 61, 68)
- 70 to 79: 6 (72, 70, 79, 72, 76, 73)
- 80 to 89: 4 (81, 82, 82, 85)
Based on this information, we can fill in the tally marks and frequencies in the table:
Test Time in Minutes | Tally | Frequency
--------------------|----------------|-----------
50 to 59 | | 0
60 to 69 | XXX | 3
70 to 79 | XXXXXX | 6
80 to 89 | XXXX | 4
Comparing the options provided:
A. Table A: 7 frequencies for 70 to 79 interval, which doesn't match the actual count of 6. Incorrect.
B. Table B: Matches the actual counts for each interval. Correct.
C. Table C: 8 frequencies for 50 to 59 interval, which doesn't match the actual count of 0. Incorrect.
D. Table D: 6 frequencies for 70 to 79 interval, which doesn't match the actual count of 6. Incorrect.
Therefore, the correct frequency table is Table B:
Test Time in Minutes | Tally | Frequency
--------------------|----------------|-----------
50 to 59 | | 0
60 to 69 | XXX | 3
70 to 79 | XXXXXX | 6
80 to 89 | XXXX | 4