Further holiday homework

[mandy]

I didn't do further this year, and I want to finish the 3/4 course before school starts. This question looked simple at first, but I actually have no idea what to do, lol. Can you explain what to do and help me?

For the following data set, find:
i. the mean
ii. the standard deviation
iii. the range
iv. the IQR
v. the median

A check was made of the speed of cars travelling on a particular stretch of road.


For (i), I did:
= 60.51
Was that even the right way to do this type of question or was that a lucky guess, cos thats the right answer :S

[Albeno69]

its quite easy i did this a while ago because im atm doing or trying to do the coarse before new year.
You did it write but the long and hard way.
But the essayist way is to write it in calculator. for that check up on form theirs guides on how to do it on ti inspire if you got it.

[amirite?]

Thats how you'd do it.
NOTE: 60.51 probably wouldnt be the mean if you had exact numbers though. ie. if it was a stem plot.
Most questions you can pretty much do in your head. The methods are pretty logical/basic.

[mandy]

Okaaaay, so how would I do part (ii) ?

[amirite?]

its quite easy i did this a while ago because im atm doing or trying to do the coarse before new year.
You did it write but the long and hard way.
But the essayist way is to write it in calculator. for that check up on form theirs guides on how to do it on ti inspire if you got it.

Yeah I wasted a lot of time in the general maths exams cause I had no idea how to use my calculator. Teacher recommends you put the graph into the calculator and itll give you the answer to all 5 instantly. I better get to know my calculator.

[amirite?]

Okaaaay, so how would I do part (ii) ?

Good question. Its hard to do on paper and lengthy. The teacher will 100 times out of 100 will tell you to put the graph into your calculator and then perform some task and the answer to all five will be calculated for you instantaneously.

[mandy]

Ohhh, this is completely a calc question, where no working out is needed?
Gonna go read the calc supplement book then.
Thanks guys :]

[xD_aQt]

I didn't do further this year, and I want to finish the 3/4 course before school starts.

Lol, how much of the course have you already covered Mandy?

[mandy]

I didn't do further this year, and I want to finish the 3/4 course before school starts.

Lol, how much of the course have you already covered Mandy?

Wellll, I've just started, lol. Umm, there's a total of 6 chapters all year, I think and I'm halfway through chapter 1, haha. So I haven't done much. Hoping to finish the course in the next two weeks? Oh you're doing further too. Have you started? 

[xD_aQt]

I didn't do further this year, and I want to finish the 3/4 course before school starts.

Lol, how much of the course have you already covered Mandy?

Wellll, I've just started, lol. Umm, there's a total of 6 chapters all year, I think and I'm halfway through chapter 1, haha. So I haven't done much. Hoping to finish the course in the next two weeks? Oh you're doing further too. Have you started? 

Haha, I'm only like half way through Chapter 1 I didn't do Further this year either and I'm finding no motivation to continue cause its boring

[mandy]

I didn't do further this year, and I want to finish the 3/4 course before school starts.

Lol, how much of the course have you already covered Mandy?

Wellll, I've just started, lol. Umm, there's a total of 6 chapters all year, I think and I'm halfway through chapter 1, haha. So I haven't done much. Hoping to finish the course in the next two weeks? Oh you're doing further too. Have you started? 

Haha, I'm only like half way through Chapter 1 I didn't do Further this year either and I'm finding no motivation to continue cause its boring

Yes, exactly, it's very boring. But we'll get through it quick

[Albeno69]

I'm exactly the same is so boating and as soon as I find sumthing difficult u just give up I need sone motivation.

[mandy]

I'm exactly the same is so boating and as soon as I find sumthing difficult u just give up I need sone motivation.

Hahah, you're doing the further course now too?

[Albeno69]

Trying but I get distraced by things and I'm finding graphs anoying and don't have much patience for graphs and relations. Lol

[mandy]

Trying but I get distraced by things and I'm finding graphs anoying and don't have much patience for graphs and relations. Lol

Haha, what other modules are you planning on doing? We can work together :]