Question

@Callisto

Answer 1

Ok. I will post question by question ok?

Answer 2

sure

Answer 3

How do I find the range of this?

Answer 4

The largest value - the lowest value

Answer 5

= 32.6 - 16.5

Answer 6

So the Range = 16.1?

Answer 7

Yup~ remember to add a unit :)

Answer 8

Oh so like 16.1degree?

Answer 9

degree Celsius

Answer 10

Right

Answer 11

Mean = sum of data / no. of data

Answer 12

Oh, so I add all of the values and then divide by 12 right?

Answer 13

Yes

Answer 14

Ok, so for b its 25.35 right>?

Answer 15

25.36, if you round the answer

Answer 16

ok

Answer 17

This function cannot be sinusoidal right?

Answer 18

I'm not sure. Perhaps we need to graph it?

Answer 19

Ok, I assume we will use the stat edit option from the t183

Answer 20

if we inpuit all the motnhly degrees in the x values in L1, what do we put as h values in L2?

Answer 21

I think it is not a sinusoidal...

Answer 22

How do I do C?

Answer 23

As the data goes up to reach the max. Then goes down to the position near to the starting position, it does not give a sine-like graph

Answer 24

Can this be considered as sinusoidal?

http://www.wolframalpha.com/input/?i=plot+ [16.5%2C18.3%2C+21.8%2C+25.6%2C+29.2%2C+31.9%2C+32.6%2C+32.4%2C+30.3%2C+26.4%2C+21.3%2C+18.0]

Answer 25

sinusoidal :

Answer 26

It is not sinusodial then, because while making a curve, it doesnt go negative and back up positive and create a pattern right?

Answer 27

Probably

Answer 28

Ok. Do you know how to use the stat menu in your calculator?

Answer 29

Why?

Answer 30

Because I think we are going to need to use this to solve problem e

Answer 31

My calculator is not that advanced :(

Answer 32

Add callisto, when I created a pattern while plotting in the graph, it created a sinusoidal right? It kind of looks like that

http://www.wolframalpha.com/input/?i=plot+%5B16.5%2C18.3%2C+21.8%2C+25.6%2C+29.2%2C+31.9%2C+32.6%2C+32.4%2C+30.3%2C+26.4%2C+21.3%2C+18.0%2C16.5%2C18.3%2C+21.8%2C+25.6%2C+29.2%2C+31.9%2C+32.6%2C+32.4%2C+30.3%2C+26.4%2C+21.3%2C+18.0%5D

Answer 33

o.o Then it looks like a sinusoidal function. Sorry, then I made a mistake....

Answer 34

Its ok:)

How do we determine the abcd?

Answer 35

I just found out that experimentX is helping you. You'd better follow his ideas. He's really smart and great while I'm not

Answer 36

I try asking in 2 different places because he is not 100% sure and I want to ensure I am going the right path

Answer 37

I'm doing the checking :)

Answer 38

ok. So i think the equation would be t = 23 [12x+4] + 32 Am I correct?

Answer 39

23 -> 8.05
still have to check the others

Answer 40

Its not 23? how come its 8?

Answer 41

a is the enlargement of the amplitude right?

Answer 42

yes

Answer 43

enlargement = (range)/2

Answer 44

ohh. okk

Answer 45

Somthing other than the value of a is wrong. im not getting the same graph

Answer 46

Are you offline?

Answer 47

This doesn't look good
http://www.wolframalpha.com/input/?i=y+%3D+8.05+%5B%28sin%28x-48%29%2F12%5D+%2B+17.5

Answer 48

I'm sorry.. I needed some time to work out the graph..

Answer 49

Sure:) Thank you btw

Answer 50

This look prettier, but I think that's not the answer :S
http://www.wolframalpha.com/input/?i=y+%3D+8.05+%5B%28sin%28x%2B36%29%2F12%5D+%2B+17.5

Answer 51

Yeah, I think it has to look an dbe placed somewhere along here:

http://www.wolframalpha.com/input/?i=plot+ [16.5%2C18.3%2C+21.8%2C+25.6%2C+29.2%2C+31.9%2C+32.6%2C+32.4%2C+30.3%2C+26.4%2C+21.3%2C+18.0%2C16.5%2C18.3%2C+21.8%2C+25.6%2C+29.2%2C+31.9%2C+32.6%2C+32.4%2C+30.3%2C+26.4%2C+21.3%2C+18.0]

Answer 52

But that would be something like... quadratic...

Answer 53

OMG! this is killing me!

Answer 54

Could it be this?

http://www.wolframalpha.com/input/?i=t+%3D+%2832.4-16.5%29%2F2+sin%282pi%2F12+x%2B48%29+%2B+%2832.4%2B16.5%29%2F2

Answer 55

experimentX 's one looks good to me...
I've never imagined that this topic could be that difficult :S

Answer 56

I cant believe its this difficult in problem e of question 1:(

Answer 57

There are still 6 questions left, and each one is so long

Answer 58

are the values are a= 8 b =0.52 c = 48 d = 40

Answer 59

when i learnt this, i never need to learn this type of application problem.. :(

Answer 60

d = 24.5?

Answer 61

Oh your right:)

Answer 62

Do you think thats correct?

Answer 63

a=8.05 would be better, I think

Answer 64

http://www.wolframalpha.com/input/?i=t+%3D+8.05+sin%280.52+x%2B48%29+%2B+24.5