how to read, develop, and interpret graphs!

How to Read, Develop, and Interpret GRAPHS!

OBSERVATIONS: often are recorded in a data table

INTERPRET (make inferences of) your DATA TABLE by performing anANALYSIS using GRAPHS

What is the relationship between Rabbits and Years for the following example: GRAPH IT

YEAR # of RABBITS

1990 500

1992 600

1994 800

1995 900

1996 1200

1998 1800

ANALYZE your DATA Step One: Identify your problem:

What is the relationship between the years and the number of rabbits

Step Two: Draw your Axis

Y-axis

X-axis

Step Three: Label Your X Axis:

Y-axis

X-axis

What is the relationship between years the number of rabbits

Years

1990 1992 1994 1996r 1998 2000

Step Three: Now Label Your Y Axis:

Y-axis

X-axis

What is the relationship between years and the number of rabbits

YEARS

RA

BB

ITS

700600

800900

500

1000

1990 1992 1994 1996r 1998 2000

Step Three: Now Label Your Y Axis:

Y-axis

X-axis

Was there enough room to label your y axis completely for this problem?

YEARS

RA

BB

ITS

1200900

15001800

600

2100

1990 1992 1994 1996r 1998 2000

Step Four: Now Plot Your Points

Y-axis

X-axisYears

RA

BB

ITS

1200900

15001800

600

2100

1990 1992 1994 1996 1998 2000

Step Four: Now Draw Your LINE

Y-axis

X-axisYearss

RA

BB

ITS

1200900

15001800

600

2100

1990 1992 1994 1996 1998 2000

Step Five: Answer the Problem

Y-axis

X-axisYears

RA

BB

ITS

1200900

15001800

600

2100

1990 1992 1994 1996 1998 2000

What are the characteristics of the Red Star?

Step Five: Answer the Problem

Y-axis

X-axisYears

RA

BB

ITS

1200900

15001800

600

2100

1990 1992 1994 1996 1998 2000

What is the x coordinate and the y coordinate of the red star?

Step Five: Answer the Problem

Y-axis

X-axisYearss

RA

BB

ITS

1200900

15001800

600

2100

1990 1992 1994 1996r 1998 2000

What is the x coordinate and the y coordinate of the green dot

Step Five: Answer the Problem

Y-axis

X-axisYears

RA

BB

ITS

1200900

15001800

600

2100

1990 1992 1994 1996 1998 2000

What are the characteristics of the Green Star?

Step Five: Answer the Problem

Y-axis

X-axisYears

RA

BB

ITS

1200900

15001800

600

2100

1990 1992 1994 1996 1998 2000

What would you estimate the rabbit population to be in 2000?

Step Five: Answer the Problem

Y-axis

X-axisYears

RA

BB

ITS

1200900

15001800

600

2100

1990 1992 1994 1996r 1998 2000

What would be the x and y coordinates for your prediction of the rabbit population in 2000?

Step Five: Answer the Problem

Y-axis

X-axisYears

RA

BB

ITS

1200900

15001800

600

2100

1990 1992 1994 1996r 1998 2000

This ia called an EXTRAPOLATION

Step Five: Answer the Problem

Y-axis

X-axisYears

RA

BB

ITS

1200900

15001800

600

2100

1990 1992 1994 1996 1998 2000

This is called an INTERPOLATION