Sort scores: First, let's sort the scores in ascending order to make it easier to create the frequency distribution table.Sorted scores: 48,57,57,62,64,65,68,68,68,71,71,71,72,74,75,75,75,75,75,75,75,79,80,80,81,81,82,82,84,88,88,90,90.
Decide class intervals: Now, let's decide on the class intervals. We can use a range of 10, starting from 50 and ending at 90.Class intervals: 50−59, 60−69, 70−79, 80−89, 90−99.
Count frequencies: Count the number of scores in each class interval to create the frequency distribution table.Frequency distribution:50−59: 260−69: 670−79: 1380−89: 990−99: 4
Create cumulative frequencies: Next, we'll create the cumulative frequency distribution table by adding the frequencies of each class interval to the previous cumulative frequency.Cumulative frequency distribution:50−59: 260−69: 2+6=870−79: 8+13=2180−89: 21+9=3090−99: 30+4=34
More problems from Find trigonometric functions using a calculator