You had the following results from an experiment in which you measured the growt
ID: 3218365 • Letter: Y
Question
You had the following results from an experiment in which you measured the growth of a cell culture (as optical density) at nine different pH levels. How could you determine if pH level related to cell culture growth?
pH
Optical density
3
0.1
4
0.2
4.5
0.25
5
0.32
5.5
0.33
6
0.35
6.5
0.47
7
0.49
7.5
0.53
Which statistical test would I use and why?
Chi-square
One-way ANOVA
Two-way ANOVA
One sample t-test
Two smaple t-test
pH
Optical density
3
0.1
4
0.2
4.5
0.25
5
0.32
5.5
0.33
6
0.35
6.5
0.47
7
0.49
7.5
0.53
Explanation / Answer
The statistical test that should be used for the given problem is Chi-square test of independence of
attributes.
The Chi-square test of independence of attributes is the appropriate test for the study because we are interested to know that whether the growth of a cell culture is independent of different pH levels or not.
The different levels of pH are attributes here.
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