Graphing And Analyzing Data Worksheet With Answers Page 7
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1214. Base your answer to the following question on the information and data table below.
One milliliter of a solution containing an even distribution of a species of bacterium was spread
on the surface of a nutrient medium in each of five culture dishes. The nutrient medium in each
dish was the same, except for pH. The dishes were then incubated at 37ºC for 24 hours. The
number of bacterial colonies in each dish was then counted, and the results are represented in
the data table below.
a) Give the graph an appropriate title
b) Label the X and Y axes
c) Create an appropriate numbered scale on each labeled axis
d) Plot the data on the grid. Surround each point with a small circle and connect the points
e) What is the independent variable in this experiment?
___________________________________
f) What is the dependent variable in this experiment?
_____________________________________
g) State a conclusion that relates the number of bacterial colonies to the pH of the nutrient on
medium.
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