Hello!
Sometimes when there are outliers in a data set, for example 1, 20,25,26,30, one is the outlier and when you find the mean it will not represent the data in the most accurate way. This is when you use the median to represent the part of the data set that has the information that is close together.
I hope this helps!
For this case we have the following expression:
Rewriting the numbers within the roots we have:
Then, by properties of powers we have:
Then, by radical properties we have:
Rewriting the expression we have:
Finally, adding similar terms we have:
Answer:
The simplified form of the expression is:
C= (31+7)1/2
Carlos has 19 points
double check
19•2 = 38-7 = 31
Answer:
The circumference is approximately 125.66.
Step-by-step explanation:
The formula for circumference is 2 x 3.14(r). Radius (or r) in this case is equal to 20 since the diameter is two times the length of the radius. 40/2 = 20.
2 x 3.14(20) ≈ 125.66
Considering the given box-and-whisker plot, it is found that the bookstore sold between 2 to 12 books in 20 days.
<h3>What does a box-and-whisker plot shows?</h3>
A box and whisker plot shows three things:
- The 25th percentile, which is the median of the bottom 50%.
- The median, which splits the entire data-set into two halfs, the bottom 50% and the upper 50%.
- The 75th percentile, which is the median of the upper 50%.
From the plot given in this problem, the have that:
- The 25th percentile is of 2.
- The 75th percentile is of 12.
This means that the percentage of days in which between 2 to 12 books were sold is:
P = 75 - 25 = 50%.
Hence, out of 40 days, the amount of days is:
0.5 x 40 = 20 days.
More can be learned about box-and-whisker plots at brainly.com/question/27721471
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