To determine the class intervals, we need to know the range of scores in the data set. Let's say the range is from 10 to20.
To create class intervals, we need to choose an interval size that is appropriate for the data set. Let's choose an interval size of 2.
The first class interval would be from 10 to 11 (lowest score to20. To create class intervals, we need to choose a suitable interval size, such as 2, 3, or 5. Let's choose an interval size of 3.
The lowest class interval would then be:
10 - 12 (since 12 is the lowest score to which we add (interval-1) = 2*3 = 6 - 1 = 5)
So the class intervals and frequency distribution table would look like:
Classes Tally Frequency (f)
-------------------------------------
10-12 | ||| 3
13-15 | |||| 4
16-18 | || 2
19-21 | | 1
Total (n) = 10 + 3 + 4 + 2 + 1 = 20
Note that the number of intervals and the interval size chosen may vary depending on the data set and the purpose of the analysis.
Answers & Comments
Answer:
To determine the class intervals, we need to know the range of scores in the data set. Let's say the range is from 10 to20.
To create class intervals, we need to choose an interval size that is appropriate for the data set. Let's choose an interval size of 2.
The first class interval would be from 10 to 11 (lowest score to20. To create class intervals, we need to choose a suitable interval size, such as 2, 3, or 5. Let's choose an interval size of 3.
The lowest class interval would then be:
10 - 12 (since 12 is the lowest score to which we add (interval-1) = 2*3 = 6 - 1 = 5)
So the class intervals and frequency distribution table would look like:
Classes Tally Frequency (f)
-------------------------------------
10-12 | ||| 3
13-15 | |||| 4
16-18 | || 2
19-21 | | 1
Total (n) = 10 + 3 + 4 + 2 + 1 = 20
Note that the number of intervals and the interval size chosen may vary depending on the data set and the purpose of the analysis.