Measure the diameter of the first can or jar top in centimeters. If the measure goes over the cm line, be sure to measure to the nearest tenth. See this picture for how to measure with cm. Record it in the first place in the table on the diameter row.
Use the string to measure around the same can or jar top. Then stretch the string across the ruler and record its measure to the nearest tenth cm. Record it directly under the measure for the diameter.
Continue measuring the diameter and circumference of each can or jar top.
When you have finished measuring, divide each circumference by the diameter and record the result, rounding to two decimal places.
Make an x axis and y axis on the grid paper like the one in the picture. You can number it as far as you need to, based on the measures you have for the data.
Plot each ordered pair you have in the table. You will move right the amount of the diameter and then move upward the amount of the circumference.
Draw a straight line which best fits the data. It may not hit every point. Look at the positive correlation graph in the lesson above to see what is meant by this.
Estimate the slope of this line by counting the rise over the run, using two points on the line.
Type in the measures of your diameters in the order they are in, in your table.
Type in the measures of the circumferences in the order in which they appear in your table.
Type in the results of dividing the circumference by the diameter in the order which they appear. Note: If
the result is not greater than one you divided the diameter by the circumference and you should redo the division in the correct order.
What was the approximate slope of the line?
Extend the straight line until it meets the y-axis. What is your y-intercept?
Now that you know the slope and intercept, type the slope-intercept form of the line.
Use the string to measure around the same can or jar top. Then stretch the string across the ruler and record its measure to the nearest tenth cm. Record it directly under the measure for the diameter.
Continue measuring the diameter and circumference of each can or jar top.
When you have finished measuring, divide each circumference by the diameter and record the result, rounding to two decimal places.
Make an x axis and y axis on the grid paper like the one in the picture. You can number it as far as you need to, based on the measures you have for the data.
Plot each ordered pair you have in the table. You will move right the amount of the diameter and then move upward the amount of the circumference.
Draw a straight line which best fits the data. It may not hit every point. Look at the positive correlation graph in the lesson above to see what is meant by this.
Estimate the slope of this line by counting the rise over the run, using two points on the line.
Type in the measures of your diameters in the order they are in, in your table.
Type in the measures of the circumferences in the order in which they appear in your table.
Type in the results of dividing the circumference by the diameter in the order which they appear. Note: If
the result is not greater than one you divided the diameter by the circumference and you should redo the division in the correct order.
What was the approximate slope of the line?
Extend the straight line until it meets the y-axis. What is your y-intercept?
Now that you know the slope and intercept, type the slope-intercept form of the line.
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ok , I must spend the evening in calculations ....... :)
1- WHERE IS THE PICTURE 1 ? (See this picture for how to measure with cm.) - line 2
2- WHERE IS THE PICTURE 2 ? ( ....on the grid paper like the one in the picture) - line 6
3 - WHERE IS THE LESSON ABOVE ? (.....graph in the lesson above ) - line 14
conclusion: I did not understand anything of this exercise.
sorry , but I can't help......... ( but I read everything and I tried to understand the exercise )
1- WHERE IS THE PICTURE 1 ? (See this picture for how to measure with cm.) - line 2
2- WHERE IS THE PICTURE 2 ? ( ....on the grid paper like the one in the picture) - line 6
3 - WHERE IS THE LESSON ABOVE ? (.....graph in the lesson above ) - line 14
conclusion: I did not understand anything of this exercise.
sorry , but I can't help......... ( but I read everything and I tried to understand the exercise )