1. Data Analysis

2. Time spent in the light Time spent in the light (min) A tank was set up so that half of it was lit and the other half was dark. Six different species of animals were placed in the tank and monitored for 100 minutes. The amount of time they spent in the light was recorded. What type of graph would be most appropriate for this data set? Which animal (s) are probably nocturnal?Why else (other than being nocturnal) may animals #2 and #5 have spent very little time in the light?

3. A town was surveyed to see what types of pets were most common. What type(s) of graphs would be appropriate to show this data? Pets What type of pet was most common? Approximately what percent of pets were dogs? What type of pet was least common?

4. Pumpkin seeds were sprouted and grown in three different environments. Their height was monitored over a six week period. What would be the most appropriate type of graph for this data? Plant Growth Plant Height (cm) What was that best environment for the pumpkin seeds? Explain your answer!

5. Insects have a waxy coating that protect them from drying out. Grasshoppers were raised in four different temperature environments. After they molted (shed their exoskeletons), their wax was tested to determine its melting point. What is the most appropriate type of graph for this data? Wax Layer Melting Point Temperature of the insect’s environment Temperature that wax melted ( o C) What was the melting point of the wax of the insects raised in a 34 o C environment? What is the relationship between environment temperature and wax melting point? Why would it be detrimental to an insect in a warm environment to have wax that melts at a lower temperature?

6. The number of students in the class with As, Bs, Cs, Ds and Fs was recorded. What is/are the most appropriate type of graph(s) for this data set? Grades Number of Students ABCDF How many students are passing the class? What is this type of distribution called? What is the most common grade?

7. Grades A B C D F This is the same data on a pie chart. What advantage does the histogram have over the pie chart?

8. Marine snails were placed in different temperature water. Their size after 1 month is compared. What is the most appropriate type of graph for this data? Size in cm Snail Growth What was the average size of the snails that were in 30 o C water? What temperature water did the snails grow better in?

9. Some snails were grown in water that also contained shrimp. Otherwise, the conditions were identical. Their size after 1 month is compared. What is the most appropriate type of graph for this data? Size in cm Snail Growth Did the snails grow bigger with or without shrimp?What might have caused the observed results?

10. This graph combines the previous two experiments. What is the optimal environment for the snails? Size in cm Snail Growth Can the left bar be compared to the middle bar? Can the left bar be compared to the right bar?Can middle bar be compared to the right bar? Were the snails grown in their optimal environment?

11. The volume of air in a SCUBA tank and the internal pressure of the tank were measured. What would be the most appropriate type of graph to show this data? Tank Pressure Volume of air (liters) Pressure (psi) What is the independent variable?What is the dependent variable? What is the relationship between tank volume and air pressure?

12. Graphing Growth Rate Data Age in yearsMales – height in cmFemales – height in cm 5109 7119 9133 11138145 13157160 15169162 17177162 19177163 1.Is there any part of your graph that shows the girls being taller than the boys? If there is, circle the area. 2.Who grows taller overall, boys or girls? 3.Do humans grow at a continuous rate or in spurts? Explain your answer. 4.What may be causing the observed results?

13. Heights of males and females Height in cm Age in years