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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Middle/High School Algebra, Geometry, and Statistics (AGS)
9.9 Classes, Tally Marks, Frequencies, Cumulative Frequencies

The following example illustrates the concepts covered so far

The weight in grams of 50 apples picked at random from a basket are as follows:

50, 60, 55, 115, 80, 105, 45, 65, 70, 85, 105, 80, 75, 65, 75, 100, 90, 85, 55, 50, 65, 55, 45, 70, 60, 50,45, 95, 90, 80, 90, 80,75,115,105, 85, 75, 60, 55, 75, 125, 140, 150, 165, 130, 155, 160, 95, 100, 135

The frequency table for the above data is




Directions: Answer the questions based on the table above. Also write at least one example of your own.
Q 1: Find the class mark of the seventh class interval.
180
170
120
160

Q 2: Determine the class size of the class interval
20
10
20.5
30

Q 3: For which class interval is the frequency maximum?
120 - 140
40 - 50
100 - 120
60 - 80

Q 4: Determine the class limits of the fourth class interval.
u.l = 100 ; l.l = 120
u.l = 120 ; l.l = 100
u.l = 100 ; l.l = 80
u.l = 120; l.l = 130

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