Question
1) Let's say that we use 16 mice in a study that seeks a relationship between...
1)
Let's say that we use 16 mice in a study that seeks a relationship between the concentration (x) of a toxic substance and the mortality time of mice (y), and the findings given in the table below are obtained. Is there a relationship between concentration and death time? What is the direction and strength of the relationship? Find it with correlation analysis.
|
Concentration (microgram) |
Death time (minutes) |
|
20 |
20 |
|
25 |
18 |
|
30 |
18 |
|
35 |
16 |
|
40 |
17 |
|
45 |
16 |
|
50 |
15 |
|
55 |
13 |
|
60 |
15 |
|
65 |
14 |
|
70 |
13 |
|
75 |
12 |
|
80 |
9 |
|
85 |
8 |
|
90 |
8 |
|
95 |
7 |
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