Graphing Practice

Introduction

Procedure 1:
Using the following data, answer the questions below and then construct a line graph.

Depth in meters

Number of Bubbles / minute Plant A

Number of Bubbles / minute Plant B

2

29

21

5

36

27

10

45

40

16

32

50

25

20

34

30

10

20

 

1. What is the dependent variable and why?  

2. What is the independent variable and why?

3. What title would you give the graph? .

4. What are the mean, median, and mode of all 3 columns of data? 

a). Depth :                      Mean____________Median__________Mode________ 

b). Bubble Plant A.:        Mean ____________Median_________Mode________ 

c). Bubbles Plant B:        Mean ____________Median_________Mode________

Graph Title: _________________________________________________________ 

Legend: ______________________________________________________________ 

Procedure 2:
Diabetes is a disease affecting the insulin producing glands of the pancreas. If there is not enough insulin being produced by these cells, the amount of glucose in the blood will remain high. A blood glucose level above 140 for an extended period of time is not considered normal. This disease, if not brought under control, can lead to sever complications and even death. 

Answer the following questions concerning the data below and then graph it.  

Time After Eating hours

Glucose ml / Liter of Blood Person A

Glucose ml / Liter of Blood Person B

0.5

170

180

1

155

195

1.5

140

230

2

135

245

2.5

140

235

3

135

225

4

130

200

 1. What is the dependent variable and why?

2. What is the independent variable and why?

3. What title would you give the graph?

4. Which, if any, of the above individuals (A or B) has diabetes? 

5. What data do you have to support your hypothesis? 

6. If the time period were extended to 6 hours, what would the expected blood glucose level for Person B? 

Title: ________________________________________________________________ 

Legend: ______________________________________________________________

Summary:
1. What conclusions can be determined from the data in graph 1?

2. What conclusions can be determined from the data in graph 2?

3. Can the data in each of these graphs be used to construct other types of graphs?

4. If so, what other graph types can be constructed?

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