Answer:
Mean is 3.2
Median is 3.1
Step-by-step explanation:
a) mean
= (2.5+3.6+3.1+4.3+2.9+2.3+2.6+4.1+3.4)/9
= 28.8/9
= 3.2
b) median: we will arrange in ascending order and pick the middle term.
2.3 2.5 2.6 2.9 3.1 3.4 3.6 4.1 4.3
From the above order, 3.1 is the middle term and is the median
a) The mean reaction time of the 9 subjects is 3.2 seconds.
A mean is an average of a set of values.
The mean is computed by summing the values and then dividing the sum by the number of subjects.
b) The median reaction time for the random sample of 9 subjects to a stimulant is 3.1 seconds.
The median is the middle number in an arranged list of values. The arrangement takes into consideration their ascending or descending orders.
The median is simple to determine when the list of values is not too long and well-arranged.
Variables Reaction Times
in seconds
1. 2.5
2. 3.6
3. 3.1
4. 4.3
5. 2.9
6. 2.3
7. 2.6
8. 4.1
9. 3.4
Total 28.8
Mean = 3.2 (28.8/9)
6. 2.3
1. 2.5
7. 2.6
5. 2.9
3. 3.1
9. 3.4
2. 3.6
8. 4.1
4. 4.3
Thus, the mean and the median have been calculated.
Learn more about calculating the mean and the median at https://brainly.com/question/452652
