Construct a grouped frequency distribution for the following 28 scores using a class width of 4:
64 63 58 46 52 62 47 49 56 47 43 41 45 51
60 62 51 61 50 55 56 53 54 58 48 48 58 46
How do I do this?
see related question, where it has been answered! Always check before reposting the same damn question over and over. It was answered last night at 7:05 pm.
actually i do check and actually that is another problem i posted, not this damn problem!
Construct a grouped frequency distribution for the following 28 scores using a class width of 4:
64 63 58 46 52 62 47 49 56 47 43 41 45 51
60 62 51 61 50 55 56 53 54 58 48 48 58 46
To construct a grouped frequency distribution, you need to follow these steps:
Step 1: Find the range of the dataset.
To find the range, subtract the minimum value from the maximum value:
64 - 41 = 23
Step 2: Determine the number of classes.
The number of classes can vary depending on the dataset and the desired level of detail. A common rule of thumb is to use 5-20 classes. In this case, since the range is 23 and we are using a class width of 4, we can calculate the number of classes by dividing the range by the class width and rounding up:
23 / 4 = 5.75 ≈ 6
Step 3: Determine the class width.
The class width is the range divided by the number of classes. In this case:
23 / 6 = 3.83 ≈ 4
Step 4: Determine the lower limits of each class.
Start with the minimum value of the dataset and add the class width to find the lower limits of each class. In this case, the minimum value is 41, and the class width is 4, so the lower limits would be:
41, 45, 49, 53, 57, 61
Step 5: Create the frequency distribution table.
Count the number of scores that fall into each class interval and record the frequencies in a table.
Class Interval | Frequency
-----------------------------
41 - 44 | 2
45 - 48 | 7
49 - 52 | 5
53 - 56 | 7
57 - 60 | 4
61 - 64 | 3
This table represents the grouped frequency distribution for the given dataset using a class width of 4.