Unit: Graphing and Interpreting Data Name _____________________________________ Date __________________

GET READY:

1.) 2.)

CLASS NOTES:

Why do we use graph?

Parts of a Graph Types of Graphs

We graph to interpret data and to represent it in a visual way. We can look at trends more easily and make predictions about the data and items we are studying.

Bar graph, line graph, circle graph

Unit: Graphing and Interpreting Data Example:

x Write an appropriate title for this graph in the space provided. x Label the x-axis and indicate the units. x Mark an appropriate scale on each axis. x Plot the data from the data table. Surround each point with a small circle and connect the points.

The rate of respiration of a freshwater sunfish was determined at different temperatures. The rate of respiration was determined by counting the number of times the gill covers of the fish opened and closed during 1-minute intervals at the various temperatures. The following data were collected.

**According to the data, as the temperature increases, the rate of respiration of the sunfish ______________

WORKSHOP/HOMEWORK:

DIRECTIONS: Following the example above create a line graph based on the data given in the table creating an appropriate scale and labeling the axes if not already done so for you. Make a title for your graph if there isn’t one already. In the end answer the analysis question using the graph and table.

Unit: Graphing and Interpreting Data 1.) The table shows data collected on the pH level of an Adirondack lake from 1980 to 1996. Using the information in the data table, construct a line graph below. The scale has been started for you.

2.) A student studied the effect of gibberellin (a plant hormone) on the growth of corn seedlings of the same height and species. A different concentration of gibberellin in a fixed volume of water was applied to 7 groups of 10 plants each maintained under the same environmental conditions for the duration of the experiment. At the end of this period, the height of each plant was measured. The data are shown in the table below. Using the information in the data table, construct a line graph on the grid below.

b) Explain the effect on corn seedling height of increasing the application amount of gibberellin from 0.05 to 0.50 microgram.

Unit: Graphing and Interpreting Data

3.) A student counted the total number of leaves in a group of duckweed plants (Lemna gibba) over a 5-day period. The data collected are shown in the table below. Using the information in the data table, construct a line graph on the grid provided following the directions below.

b) The time it takes for the number of leaves to increase from 15 to 30 is approximately _____________ days