# Dr Andrzej Sokołowski

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## Measurement and modeling

• Uniwersytet Ekonomiczny w Krakowie
• Polityka
Pobrań: 91
Wyświetleń: 1358

Measurement and modeling Mechanical - moving averages Moving averages We have to define the lenght of a moving average. Let's take it as 3. We take first 3 observations and calculate the average. The result is assigned to the time unit which is in the middle. Than we move forward, leave out the ...

## THE ANALYSIS OF MONTHLY DATA

• Uniwersytet Ekonomiczny w Krakowie
• Polityka
Pobrań: 77
Wyświetleń: 1071

THE ANALYSIS OF MONTHLY DATA Data presentation Y - number of passangers of airline company (in thousands). Data has been taken from Box G.E.P., Jenkins G., “time series: analysis, forecasting and control”. graphs - 2D graphs - line plots (variables) Number of passangers is growing (we have tren...

## THE ANALYSIS OF QUARTERLY DATA

• Uniwersytet Ekonomiczny w Krakowie
• Polityka
Pobrań: 84
Wyświetleń: 1071

THE ANALYSIS OF QUARTERLY DATA Data presentation Y - sales of a medicine cennected with a flu Graphs - 2D plots - line plots (Variables) Trend identification The nature of Y variable - since this medicine is good for flu, most probably sales are higher in winter time if this medicine is good w...

## Trend analysis on yearly data

• Uniwersytet Ekonomiczny w Krakowie
• Polityka
Pobrań: 42
Wyświetleń: 1092

TREND ANALYSIS BASED ON YEARLY DATA (5.03) Data Trend identification The analysis of the problem done even without any data Graph ( graphs - 2d graphs - line plots (variables) ) Do we have a trend? Yes, the consumption is growing Testing trend coeficients Measurement and modeling Mechanical...

## Analysis on monthly data

• Uniwersytet Ekonomiczny w Krakowie
• Polityka
Pobrań: 35
Wyświetleń: 826

THE ANALYSIS OF MONTHLY DATA Data presentation Y - number of passangers of airline company (in thousands). Data has been taken from Box G.E.P., Jenkins G., “time series: analysis, forecasting and control”. graphs - 2D graphs - line plots (variables) Number of passangers is growing (we have tren...