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stira [4]
3 years ago
14

The table shows 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 20 6 8 18 10 14 13.3 5.2
High School 20 3 5.5 16 10.5 11 11 5.4

1. Which of the choices below best describes how to measure the spread of this data? (See picture)

2.Which of the choices below best describes how to measure the spread of this data?
Both spreads are best described with the IQR.

Both spreads are best described with the standard deviation.

The college spread is best described by the IQR. The high school spread is best described by the standard deviation.

The college spread is best described by the standard deviation. The high school spread is best described by the IQR.

Mathematics
2 answers:
satela [25.4K]3 years ago
5 0

Answer:

The correct option is: The college spread is best described by the standard deviation. The high school spread is best described by the IQR.

Step-by-step explanation:

We have given a table. According to that table  a survey about the amount of time students spend doing homework each week has been conducted. The students were either in college or in high school. Now which of the choices below best describes how to measure the spread of this data.

The correct option is: The college spread is best described by the standard deviation. The high school spread is best described by the IQR.

inessss [21]3 years ago
4 0

Answer:

the answer is actually B

Step-by-step explanation:

when drawn as a box and scatter plot, both appear to be closely symmetrical. as we know, standard deviation is used for symmetrical data, and the IQR is used for data that is not symmetrical.

i am unable to attach the box plots, but try drawing it out!

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inverse...

x = 9/5y + 32
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Sooooo
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3 years ago
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8 0
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Russell and Aaron can build a shed in 8 hours when working together. Aaron works three times as fast as Russel. How long would i
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Answer:

32 hours.

Step-by-step explanation:

Let x represent the time taken by Russell and Aaron to build the shed.

We have been given that Russell and Aaron can build a shed in 8 hours when working together. Aaron works three times as fast as Russel.

Russell's work rate would be \frac{1}{x}.

Since Aaron works three times as fast as Russel, so Aaron's work rate would be \frac{3}{x}.

Part of work done by in one hour would be \frac{1}{8}.

We can represent our given information in an equation as:

\frac{1}{x}+\frac{3}{x}=\frac{1}{8}

Let us solve for x.

\frac{1}{x}*8x+\frac{3}{x}*8x=\frac{1}{8}*8x

8+3*8=x

8+24=x

32=x

Therefore, it will take Russell 32 hours to build the shed working alone.

4 0
3 years ago
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