The table below shows data from a survey about the amount of times students spend doing homework each week. The students were either in college or in high school:
Which of the choices below best describes how to measure the spread of this data?
A- Both spreads are best described with the IQR.
B- Both spreads are best described with the standard deviation.
C- The college spread is best described by the IQR. The high school spread is best described by the standard deviation.
D- The college spread is best described by the standard deviation. The high school spread is best described by the IQR.
Answers
Answer:
in table data from a survey about the amount of time students spend doing homework each week. The students were either in college or in high school: High Low Q1 Q3 IQR Median Mean σ
College 50 5 7.5 15 7.5 11 13.8 6.4
High School16 0 9.5 14.5 5 13 10.7 5.3 Both spreads are best described with the standard deviation.
Step-by-step explanation:
The true statement is that: (b) Both spreads are best described with the standard deviation.
OutliersTo determine the spread to use for the dataset, we start by checking for outliers using:
[tex]L = Q_1 - 1.5 \times IQR[/tex]
[tex]U = Q_3 + 1.5 \times IQR[/tex]
CollegeFor the college, we have:
[tex]L =8 - 1.5 \times 10 = -7[/tex]
[tex]U = 18 + 1.5 \times 10 = 33[/tex]
The range of the dataset is 6 to 20.
This means that, there is no outlier in the college dataset
High SchoolFor the high school, we have:
[tex]L =5.5 - 1.5 \times 10.5 = -10.25[/tex]
[tex]U = 16 + 1.5 \times 10.5 = 31.75[/tex]
The range of the dataset is 3 to 20.
This means that, there is no outlier in the college dataset
Since there are no outliers in both dataset, then it is best to use the standard deviation to describe the spread
Hence, both spreads are best described with the standard deviation.
Read more about spreads at:
https://brainly.com/question/9355821
Related Questions
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10 poiiiiintsssss
Answers
Answer: no i do not agree.
Step-by-step explanation:
Try n = 2 and you will see the answer
8(2) + 6
16 + 6
22
2{4(2) + 3}
2(8+3)
2(11)
22
14(2)
All 3 do not equal to each other. Proving that Juwon's statement is wrong.
Answer:
The first two are equivalent but different than the third.
Step-by-step explanation:
[tex]8n+6 = 2(4n+3) => 6=6\\8n+6 = 14n => 6n = 6 => n = 1\\\\[/tex]
The first two are identical by factoring 2 out of the first one, or distributing 2 in the second one.
The equality of the first and third equations, suggests that it is only true for n = 1.
To prove it wrong, find a number that shows the inequality:
[tex]n = 2\\8n+6 = 2(4n+3) = 22\\14n = 28\\\\22 \neq 28[/tex]
Find the slope of the line through the pair of points.
C(3, –4), D(–2, 2)
Answers
Answer:
6/-5
Step-by-step explanation:
Just follow the equation
[tex]\frac{y2-y1}{x2-x1}[/tex]
In this case
y1=-4
y2=2
x1=3
x2=-2
Now if you do everything correctly
The answer is 6/-5
I will give brainliest to whoever answers correctly and is first
Answers
Answer:
x=16
Step-by-step explanation:
4x+21=85 subtract 21 from both sides
4x=64 divide both sides by 4
x=16
Answer:. x=16°
4x+21=85°. ( parallel anglea are equal)
4x=85-21. (move x-es in one side and known numbers in another side)
4x=64°. (subtract)
x=64/4. (4 is multiplied to x, so when it goes to other side of =, it changes sign and divides )
x=16°