a.
Find the mean and median of the data.
a.
Answer to Problem 25PPS
Explanation of Solution
Given information:
ACT scores for a recent year:
Calculation:
Here, we will calculate the mean of the given data:
Now, we will calculate the median of the given data:
As, there are
Hence, the mean and median is
b.
Find if it is a sample or population.
b.
Answer to Problem 25PPS
Population.
Explanation of Solution
Given information:
ACT scores for a recent year:
Calculation:
Here, the data shows the average SAT scores for all states.
Hence, the data shows the population.
c.
Find the standard deviation of the data.
c.
Answer to Problem 25PPS
Explanation of Solution
Given information:
ACT scores for a recent year:
Calculation:
Here, we will calculate the standard deviation of the data:
Hence, the standard deviation is
d.
Find the mean and median if the mean score of
d.
Answer to Problem 25PPS
The mean will increase and median will remain same.
Explanation of Solution
Given information:
ACT scores for a recent year:
Calculation:
Here, as we can see the mean is increasing. But the median will remain same because the middle values of order data set does not changed.
Hence, the mean will increase and median will remain same.
Chapter 12 Solutions
Algebra 2
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