ATAR Notes: Forum

VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE General & Further Mathematics => Topic started by: Studyinghard on May 05, 2010, 09:42:28 pm

Title: Time series
Post by: Studyinghard on May 05, 2010, 09:42:28 pm

Here is some data

Quarter       1             2            3             4

1998

1999

2000

lets just say the SI for quarter 2 is 1.95

Explain what the SI for second quarter represents with respect to yearly average.

Title: Re: Time series
Post by: crayolé on May 05, 2010, 09:49:20 pm

The SI average is always 1.
So that means that the second quarter sales were 95% above the yearly average.

Title: Re: Time series
Post by: Studyinghard on May 05, 2010, 09:53:37 pm

So you dont have to do any calculations regarding yearly average or anything?

Title: Re: Time series
Post by: crayolé on May 05, 2010, 09:58:07 pm

Nah, the seasonal index has already done the calculations for you.

Remember the equation to find it?

Title: Re: Time series
Post by: yr12 on May 05, 2010, 10:51:04 pm

Just another question..

Quarter               1                  2                3              4
1998

1999

2000

This is quarterly unemployment for a country.

A question is in quarter 1, 2001 (this country) had 10 million people either working or seeking work. Unemployment was so high in this quarter it would appear as an outlier on the boxplot above. Find the smallest number of people that were unemployed in (this country) for this quarter.

Title: Re: Time series
Post by: crayolé on May 05, 2010, 10:56:45 pm

Umm i dont think you can work it out without any figures there?

Title: Re: Time series
Post by: yr12 on May 05, 2010, 10:57:25 pm

Yeah I dont want it answered I just want to know the technique so I can figure it out myself ;)