Maths project kids shoe sizes

Post Reply
mb8845
Posts: 5
Joined: Fri May 23, 2014 9:20 pm

Maths project kids shoe sizes

Post by mb8845 »

Working my way through the maths project about kids shoe sizes, all relatively straight forward (facebook is a really good tool for getting fast kids shoe sizes) until I have come to working out the average shoe size in each age group. Normally to find an average we all know but how does this work with shoe sizes ? I am doing Euro sizes so say I have 4 x kids who are age 5 and all have different shoe sizes if I do a normal average calculation I get a number that does not relate to a shoe size ? obviously because they are shoe sizes and not just numbers but how do I get an average then ?
I must be missing something, any help would be good cheers.

PPoskitt
DLC Moderator
Posts: 1301
Joined: Tue Apr 01, 2014 2:31 pm
Location: UK
Contact:

Re: Maths project kids shoe sizes

Post by PPoskitt »

Hey Mb,

I haven't gone through that particular module myself, but hoping I can help out here. Are the shoes sizes decimals? Or are they straight forward 4, 5, 7, 6 etc?

But I understand what you're concerned with here....as the average would work out as...

4+5+7+6 = 22
22 / 4 = 5.5 (5 1/2)

Does the question state that you can round up/down your answer? Does it give anymore information for how specific you need to be?
Phil [ DLC Moderator ]

- Access to Paramedicine 2014 -
- FAB 5 Award Winner August 2015 -

| Paramedic | McPara | SCST Affiliate |
Admin of @PreHospECG (Twitter) & '12-Lead ECG: I've Got the Rhythm' (Facebook)

mb8845
Posts: 5
Joined: Fri May 23, 2014 9:20 pm

Re: Maths project kids shoe sizes

Post by mb8845 »

This was definitely a case of not knowing how a scientific calculator works ! The kids sorted me out. Apparently you can't just put in all the additions and then go straight onto a division, you must equals first and then divide when usuing one of these calculators. it does work out fine Phil, i converted all my sizes to european first as this is easier. Nice to know i'm not going bonkers.

PPoskitt
DLC Moderator
Posts: 1301
Joined: Tue Apr 01, 2014 2:31 pm
Location: UK
Contact:

Re: Maths project kids shoe sizes

Post by PPoskitt »

Great to hear, glad it all worked out!! :D You're definitely not going Bonkers, these calculators can definitely throw you for the easiest of mistakes!

For future reference also in the order of operations (maybe what the calculator was attempting to achieve) ...

- Multiply and divide from left to right.
- Add and subtract from left to right.

All the best with the rest of the module!! :D :thumbup:
Phil [ DLC Moderator ]

- Access to Paramedicine 2014 -
- FAB 5 Award Winner August 2015 -

| Paramedic | McPara | SCST Affiliate |
Admin of @PreHospECG (Twitter) & '12-Lead ECG: I've Got the Rhythm' (Facebook)

lawukefa
Posts: 1
Joined: Mon Sep 04, 2017 6:17 pm

Re: Maths project kids shoe sizes

Post by lawukefa »

Hello there,

Baby Shoe Sizes

Size 1 (Euro Size 16)
Length: 3 1/2 inches. Approximate Age: 0-3 months

Size 2 (Euro Size 17)
Length: 3 5/8 inches. Approximate Age: 3-6 months

Size 2.5
Length: 3 7/8 inches. Approximate Age: 3-6 months

Size 3 (Euro Size 18)
Length: 4 inches. Approximate Age: 6-9 months

Size 3.5 (Euro Size 18)
Length: 4 1/8 inches. Approximate Age: 6-9 months

Size 4 (Euro Size 19)
Length:4 3/8 inches. Approximate Age: 9-12 months

Size 4.5 (Euro Size 20)
Length: 4 1/2 inches. Approximate Age: 9-12 months

Size 5 (Euro Size 20)
Length: 4 5/8 inches. Approximate Age: 12-18 months

Size 5.5 (Euro Size 21)
Length: 4 7/8 inches. Approximate Age: 12-18 months

Size 6 (Euro Size 21)
Length: 5 inches. Approximate Age: 18-24 months

Thanks

Post Reply

Return to “assessments”