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From users who are members of Transition to university :
Chris Graham  said  Ready to use  1 month, 4 weeks ago 
Christian LawsonPerfect  said  Ready to use  2 years, 11 months ago 
Stanislav Duris  said  Needs to be tested  2 years, 11 months ago 
Elliott Fletcher  said  Has some problems  2 years, 11 months ago 
From users who are not members of this Transition to university :
Timur Zaripov  said  Doesn't work  2 months ago 
Parul Sharma  said  Ready to use  1 year, 10 months ago 
History
Chris Graham 1 month, 4 weeks ago
Gave some feedback: Ready to use
Chris Graham 1 month, 4 weeks ago
Changed the protected variable name (as) which was causing the error.
Timur Zaripov 2 months ago
Gave some feedback: Doesn't work
Parul Sharma 1 year, 10 months ago
Gave some feedback: Ready to use
Stanislav Duris 2 years, 11 months ago
Published this.Christian LawsonPerfect 2 years, 11 months ago
Gave some feedback: Ready to use
Christian LawsonPerfect 2 years, 11 months ago
Saved a checkpoint:
Never say something "prevents us from making mistakes"  a sufficiently stupid student always exists! Instead, say it "helps to make mistakes less likely".
I've done some fiddling with the advice, but otherwise this is a good question.
Stanislav Duris 2 years, 11 months ago
Gave some feedback: Needs to be tested
Elliott Fletcher 2 years, 11 months ago
Gave some feedback: Has some problems
Elliott Fletcher 2 years, 11 months ago
I think this is a really good question and there isn't really much that needs fixing, just a few grammatical points.
Advice
a)
On the second line here i think it should say "The frequency column" instead of "Frequency column".
b)
I would say "Therefore the mean is" instead of "Therefore the mean:" i don't think you need a colon there.
Stanislav Duris 2 years, 11 months ago
Gave some feedback: Needs to be tested
Stanislav Duris 2 years, 11 months ago
Created this.No variables have been defined in this question.
This variable doesn't seem to be used anywhere.
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