Answer: The required frequency table,
Class Interval: 61 - 70 71 - 80 81 - 90 91 - 100
Frequency: 2 0 6 2
Step-by-step explanation:
Here, test scores for 10 students are,
61, 67, 81, 83, 87, 88, 89, 90, 98, and 100.
Since, In interval 61 - 70, scores are 61 and 67.
Therefore, frequency of interval 61 - 70 = 2
In interval 71 - 80, there are no scores.
Therefore frequency of interval 71 - 80 = 0
In Interval 81 - 90, scores are , 81, 83, 87, 88, 89 and 90.
Therefore frequency of interval 81 - 90 = 6
In Interval 91 - 100, scores are 98 and 100.
Therefore, frequency of interval 91 - 100 = 2
