captainbrit1
New member
- Joined
- Feb 12, 2018
- Messages
- 1
Hi, I don't have a clue where to post this, so apologies if it's in the wrong place. Please could somebody help me of the formaula to work out this question:
'Three schools recorded statistics relating to the number of years of service of their teachers':
SCHOOL MEDIAN MODE RANGE
A 10 8 13
B 14 11 20
C 18 20 15
Indicate all the true statements:
1. In school A, there were no teachers with more than 22 years of service.
2. Some teachers in school C had less than 5 years of service.
3. There is at least one teacher with more than 19 years of service in school B.
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I understand mode, median, range and mean - I just don't know how to work this question out without having the data to hand first. I am normally expected to find the mode, range and median from a set of data, but this is somewhat reversed! I know the answer is A and C, but since I will have other questions to ask like this, I need a formula to help me in the future - thank you!
'Three schools recorded statistics relating to the number of years of service of their teachers':
SCHOOL MEDIAN MODE RANGE
A 10 8 13
B 14 11 20
C 18 20 15
Indicate all the true statements:
1. In school A, there were no teachers with more than 22 years of service.
2. Some teachers in school C had less than 5 years of service.
3. There is at least one teacher with more than 19 years of service in school B.
-------
I understand mode, median, range and mean - I just don't know how to work this question out without having the data to hand first. I am normally expected to find the mode, range and median from a set of data, but this is somewhat reversed! I know the answer is A and C, but since I will have other questions to ask like this, I need a formula to help me in the future - thank you!