A-Level Maths: L3-17 [Data: Introducing Linear Coding]

[@pumkineater5593]

Is the mean affected by division and subtraction too?
Is standard deviation affected by division too?

[@TLMaths]

The a can be negative and the b can be a fraction, so yes.

[@pumkineater5593]

Jack Brown ok thanks!

[@Rohit-jz9wy]

Jack Brown What affects the median and the mode?

[@TLMaths]

They would both be affected by addition, subtraction, multiplication and division.
For example:
2, 3, 3, 3, 3, 4, 5
median = 3, mode = 3
If you have a linear transformation of 2x+3 then you get:
7, 9, 9, 9, 9, 11, 13
median = 9, mode = 9

[@Rohit-jz9wy]

Jack Brown thanks.

[@Suzan557]

very good video, and love your sweater😅

[@ctds]

thank you! it really helped!

[@abdulrahmanfarah694]

Is this part of the aqa spec because I haven't come across this before?

[@stormydoctor9009]

yh same

[@TLMaths]

@@stormydoctor9009 It IS in the AQA approved Oxford textbook as "Coding", although it is not specifically mentioned in the specification.

[@TLMaths]

It IS in the AQA approved Oxford textbook as "Coding", although it is not specifically mentioned in the specification.

[@ismailrahman2679]

hi jack what affects q1 and q3

[@TLMaths]

What do you mean by q1 and q3? The lower and upper quartiles?

[@hindaabdi5197]

@@TLMaths yeh

[@priyanshi6081]

is there a video made for linear combination of random variables in alevel statistics ??

[@TLMaths]

That would be in Further Maths and I haven't got that far yet.

[@ria9844]

is this for OCR MEI too?

[@TLMaths]

Linear coding is not specifically mentioned in the specification, but it could be part of problem solving associated with the question, so I wouldn't completely discount it.

[@hannahelias2891]

is this in stats or pure ?

[@TLMaths]

stats

[@Marigoldens]

can we have CIE things please sir, your faithful student

[@successfulstudents974]

Is this in CIE?

[@jaidenl5597]

Thanks