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2 years ago

What is the interquartille range of the given data set

Mathematics

1 answer:

IrinaK [193]2 years ago

3 0

Answer: B. 9

Step-by-step explanation:

First, find the median of the data set. This set has an even number of points, so find the average between the two middle points: 18 and 19. 18+19 = 37. 37/2 = 18.5. The median is 18.5.

Now, to find the lower quartile, find the median of the lower half of the data set {11, 12, 14, 15, 18}. The number in the middle is 14. The lower quartile is 14.

To find the upper quartile, find the median of the upper half of the data set {19, 21, 23, 25, 55}. The number in the middle is 23. The upper quartile is 23.

To find the interquartile range, subtract the lower quartile from the upper quartile. 23-14 = 9. The interquartile range is 9.

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timofeeve [1]

Multiple the two Collins

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3 years ago

What happens to the area of the circle when it's radius is doubled? 12.57÷3.14 radius= 4cm

Anna11 [10]

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4 years ago

1. The county fair charges $1.25 per ticket for the rides. Jermaine bought 25 tickets for the rides and spent a total of $43.75

Sloan [31]

Answer:

Y= 12.5+X

Step-by-step explanation:

Y=43.75

X=1.25x25=31.25

so 43.75 minus 31.25= 12.5

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7 0

3 years ago

Multiply 5(−37). Simplify your answer.

blsea [12.9K]

Answer:

Step-by-step explanation:

Given the expression 5(-3/7)

On simplifying, we have:

$= 5 \times \frac{-3}{7}\\ \\= \frac{5 \times -3}{7}\\ \\= \frac{-15}{7}$

Express as a mixed fraction

$= \frac{-15}{7}\\= -2 \frac{1}{7}$

Hence the correct answer is -2 1/7

7 0

4 years ago

Active

Ber [7]

Answer:

The expressions for the payment made to Mary are,

(Monday) 90 = 15m + b

(Tuesday) 62 = 8m + b

where m and b are the fee per student and the base fee, respectively. Solving for m and b, the values are 4 and 30.

The equation that represents Mary's earning is

y = 4x + 30

For 20 students,

y = 4(20) + 30 = 110

For Lisa's earnings,

y = 8x + 15

Substituting 20,

y =8(20) + 15 = 175

Thus, Lisa would earn more than Mary by $65.

(Btw this is not my work, I got it from someone else on brainly and wanted to help lol)

7 0

3 years ago