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3 years ago

13

John sister went shopping with him. She expected to spend $100 on clothes, but only spent $10. Jonah wanted to help her calculat

e the percent error, but he thinks he may have made a mistake. Are his calculations below correct? Why or why not?

2 answers:

Mars2501 [29]3 years ago

7 0

Incorrect cuz where did he get the 90 from??

STALIN [3.7K]3 years ago

4 0

Answer:

Incorrect, he subtracted 10 (the amount spent) from 100 while he has to subtract the remaining amount to find the amount he spent meaning he has to subtract 90 from 100, not 10. The denominator is also wrong. The denominator would be 100, the original amount from which he wants to find the percentage. that would be

100-90/100

10/100

10%

pls mark brainliest

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The managers of 21 supermarkets counted the number of cars in their parking lots on the same day. The results are shown in the l

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Step-by-step explanation:

Interquartile range is the difference of third and first quartile.

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As the number of values are odd

n=21

The median will be: $(\frac{n+1}{2}) th\ term$

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As now the halves contain even number of values, the medians will be the average of middle two values

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<u>For Second Half:</u>

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$Q_2 = \frac{146+156}{2}\\Q_2 = \frac{302}{2}\\Q_2 = 151$

Now

<u>Interquartile Range:</u>

$IQR = Q_3-Q_1\\= 151-108.5\\=42.5$

Hence,

The IQR is 42.5

Keywords: Median, IQR

Learn more about median at:

#LearnwithBrianly

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