How to calculate the mean and modal class from a group of data.
It is easy to find the modal class from a table.All you have to do is look for the group with the highest frequencies.The mode is the number that comes up the most.The group should be written down and not Frequency.You won't score any marks if you do this.The only way to get a mark in the modal class is if you don't work out.Remember to look for the group with the highest frequencies.
Some examples involve finding the class from a table.
The table shows the weights of patients.There are 13 people who have a weight between 60 and 70 kilogram, 2 of which are between 70 and 75 kilogram.The class interval is written down.
All you have to do is look for the group with the highest frequencies.There were 45 people who had a weight between 75 and 95 kilogram.
The table shows the race times of a group of athletes.In the 400m race, 6 people completed the race in a time of 45 seconds up to 50 seconds, 9 people did the same in 55 seconds or less, and the remaining 3 athletes did it in 60 seconds.The class interval should be worked out for these times.
Pick out the group that has the highest frequencies by looking at the Frequency column.9 people completed the race in a time of 50 seconds up to 55 seconds and the other 9 completed it in 60 seconds or less.There are two classes, known as bimodal.
It is very easy to work out the modal class interval.It can be difficult to find the mean and median from a table.
You will be looking for the group with the highest frequencies.This will be the group with the same name.
Since 8 is the highest Frequency, it will be this group.
It will be the score with the highest frequencies.Since 40 is the highest Frequency, it will be the group corresponding to this number.
The largest group in the modal group is the group corresponding to 26.
If the frequencies are 7, 3, 5, and 7, what is the modal class?Please tell me how to compute the mean.
If you want to work out the mean, you have to divide the answer by the total frequencies.
If the least mark obtained in the history test is 18%, the range of the marks was 70%.What was the highest score on the history test?
The group or value corresponding to this will be the mode if you look for the highest frequencies in the table.