1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sergey [27]
3 years ago
13

These box plots show the prices for two different brands of shoes.

Mathematics
1 answer:
nignag [31]3 years ago
7 0

Answer: Choice C

The interquartile range (IQR) for brand A, $10, is less than the IQR for brand B, $20.

===========================================================

Explanation:

Let's go through the answer choices one by one to see which is true and which is false. Also, we'll see which is helpful when it comes to the spread.

----------------------

Choice A

The IQR is found by subtracting the values of Q1 and Q3, which are the left and right edges of the box in that order.

For boxplot A, we have an IQR = Q3-Q1 = 80-70 = 10.

So we can immediately rule out choice A because the IQR for boxplot A is not 20, but instead it's 10.

----------------------

Choice B

The statement made in choice B is true, since the center vertical lines represent the median, but it's not useful to determine the spread. The median only tells us the center of the distribution. It doesn't tell us how spread out the distribution is.

Imagine you didn't have access to the graph. Now if you're told that the median for brand A is larger than brand B's median, then you'd probably think boxplot A is more spread out; however, the boxplot diagram shows the opposite is the case.

So again the median isn't used here. We can rule out choice B.

----------------------

Choice C

This statement is true. We subtract the box edge values to get the IQR values for each boxplot

For brand A we have IQR = Q3-Q1 = 80-70 = 10

For brand B we have IQR = Q3-Q1 = 70-50 = 20

This is the answer we're after.

The IQR is one tool we can use to measure the spread. The range is another option. We could also use the variance or the standard deviation (two slightly similar ideas) to measure the spread.

As you can see from the diagram, the larger the IQR, the more spread out the data will be.

----------------------

Choice D

This is false because earlier we've shown 10 is the IQR for brand A.

You might be interested in
Can we obtain a diagonal matrix by multiplying two non-diagonal matrices? give an example
polet [3.4K]
Yes, we can obtain a diagonal matrix by multiplying two non diagonal matrix.

Consider the matrix multiplication below

\left[\begin{array}{cc}a&b\\c&d\end{array}\right]   \left[\begin{array}{cc}e&f\\g&h\end{array}\right] =  \left[\begin{array}{cc}a e+b g&a f+b h\\c e+d g&c f+d h\end{array}\right]

For the product to be a diagonal matrix,

a f + b h = 0 ⇒ a f = -b h
and c e + d g = 0 ⇒ c e = -d g

Consider the following sets of values

a=1, \ \ b=2, \ \ c=3, \ \ d = 4, \ \ e=\frac{1}{3}, \ \ f=-1, \ \ g=-\frac{1}{4}, \ \ h=\frac{1}{2}

The the matrix product becomes:

\left[\begin{array}{cc}1&2\\3&4\end{array}\right] \left[\begin{array}{cc}\frac{1}{3}&-1\\-\frac{1}{4}&\frac{1}{2}\end{array}\right] = \left[\begin{array}{cc}\frac{1}{3}-\frac{1}{2}&-1+1\\1-1&-3+2\end{array}\right]= \left[\begin{array}{cc}-\frac{1}{6}&0\\0&-1\end{array}\right]

Thus, as can be seen we can obtain a diagonal matrix that is a product of non diagonal matrices.
8 0
3 years ago
Read 2 more answers
What is the slope<br><br> The options are 1,3,and 5<br><br><br> I’ll make you brainlist
myrzilka [38]
The slope is 1, you can see as it goes right one it goes up one, so the rise/ run would be 1


ANSWER: 1
7 0
2 years ago
Read 2 more answers
Find the next two terms. 81, 27, 9, ?, ?
Nataly_w [17]

Answer:

3 and 1

Step-by-step explanation:

Similarly each term is 1/3 of the previous term. This is a geometric sequence.

9/3 = 3

3/3 =1

3 0
2 years ago
Which of the binomials below is a factor of this expression? 100A2 - 49B2
fomenos
Hello,

100a²-49b²=(10a)²-(7b)²=(10a-7b)(10a+7b)
===================================


7 0
3 years ago
Read 2 more answers
Inequality that the verbal expression x is less than 2
Mumz [18]

Answer:

x < 2

Step-by-step explanation:

< means less than

x < 2

4 0
3 years ago
Read 2 more answers
Other questions:
  • I need help please solve
    12·1 answer
  • What's 1,112,433 run to the nearest ten thousand
    6·2 answers
  • What is 299.9875 to the nearest hundredth
    9·2 answers
  • Parallel to y = 2/3x+6<br> through (-3, 6)
    8·1 answer
  • Which number is NOT in the solution set of the inequality x &lt; 15?
    9·1 answer
  • PLS HELP SP=3x+1, and LN=10x−6. Find SP.<br><br> A. 9<br> B. 4<br> C. 21<br> D. 7
    14·1 answer
  • Addition (must show work) can someone solve 1. m + 13 =29 2. z + x =34 <br><br> 3. 87 + p = 136
    15·1 answer
  • Find the length of arc AB
    5·1 answer
  • Order these from Least to greatest <br><br> 5/12 <br> 8/9<br> 0.32<br> 1/2
    8·2 answers
  • Which expression is equivalent to -18a^-2b^5/-12a^-4b^-6
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!