Original post by Bigflakes
What do I do with the midpoints? Do I times it by the FD?
You want (midpoint) x (frequency) to estimate the total income from a particular class.
To get the frequency, note that (freq. density) = (freq) / (class width) hence (freq.) = (width) x (FD) ... i.e. frequency for a class is just the area of the rectangle in that class.
Sum up all (midpoint) x (frequency) quantities to get the total income over 300 days and then find the mean from there.
(edited 1 year ago)
Original post by RDKGames
You want (midpoint) x (frequency) to estimate the total income from a particular class.
To get the frequency, note that (freq. density) = (freq) / (class width) hence (freq.) = (width) x (FD) ... i.e. frequency for a class is just the area of the rectangle in that class.
Sum up all (midpoint) x (frequency) quantities to get the total income over 300 days and then find the mean from there.
To get the frequency, note that (freq. density) = (freq) / (class width) hence (freq.) = (width) x (FD) ... i.e. frequency for a class is just the area of the rectangle in that class.
Sum up all (midpoint) x (frequency) quantities to get the total income over 300 days and then find the mean from there.
Thank you
Original post by RDKGames
You want (midpoint) x (frequency) to estimate the total income from a particular class.
To get the frequency, note that (freq. density) = (freq) / (class width) hence (freq.) = (width) x (FD) ... i.e. frequency for a class is just the area of the rectangle in that class.
Sum up all (midpoint) x (frequency) quantities to get the total income over 300 days and then find the mean from there.
To get the frequency, note that (freq. density) = (freq) / (class width) hence (freq.) = (width) x (FD) ... i.e. frequency for a class is just the area of the rectangle in that class.
Sum up all (midpoint) x (frequency) quantities to get the total income over 300 days and then find the mean from there.
Do you know how they got these frequencies, because when I do CW*midpoint i get a couple thousands?
Quick Reply
Related discussions
- I forgot to shade in my histogram! 😂😂
- s1!
- Psychology
- Maths GCSE (edexcel higher paper 2 and 3 topics)
- Help with s1 may 2013 (r)
- maths statistics- histograms
- Igcse Edexcel maths today
- How much math is in aqa a level psychology+sociology
- OCR higher paper 4
- AS-level Edexcel Pure Paper 2023, 18th May
- Edexcel GCSE Mathematics Paper 2 (1MA1 2) - 10th November 2023 [Exam Chat]
- Standard deviation larger than the mean.
- Edexcel A level Maths 2023 paper 3 UOMS
- 2022 Edexcel Maths GCSE (Higher) Checklist
- Edexcel IGCSE 24th May 2018 Paper 3H Unofficial mark Sceheme
- Edexcel GCSE Statistics Paper 1 Higher Tier (1ST0 1H) - 12th June 2023 [Exam Chat]
- Edexcel IGCSE Higher tier Mathematics A Paper 1 1H (4MA1) - 19th May 2023 [Exam Chat]
- Edexcel A Level Further Mathematics Paper 3D (9FM0 3D) - 23rd June 2023 [Exam Chat]
- GCSE Studying Thread
- Edexcel A Level Mathematics Paper 3 (9MA0 03) - 20th June 2023 [Exam Chat]
Latest
Trending
Last reply 4 days ago
Did Cambridge maths students find maths and further maths a level very easy?Last reply 2 weeks ago
Edexcel A Level Mathematics Paper 2 unofficial mark scheme correct me if wrongMaths
71
Trending
Last reply 4 days ago
Did Cambridge maths students find maths and further maths a level very easy?Last reply 2 weeks ago
Edexcel A Level Mathematics Paper 2 unofficial mark scheme correct me if wrongMaths
71
