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garik1379 [7]
3 years ago
5

The data set shows the number of stamps that each of 10 stamp collectors brought to a show.

Mathematics
2 answers:
Ganezh [65]3 years ago
4 0
Only 71 is an outlier. 
soldi70 [24.7K]3 years ago
4 0

Answer:

Only 71 is an outlier.

Step-by-step explanation:

The give data is

71, 84, 133, 140, 158, 166, 170, 171, 188, 198

Divide the data in two equal parts.

(71, 84, 133, 140, 158), (166, 170, 171, 188, 198)

Now, divide each parenthesis in two equal parts.

(71, 84), 133, (140, 158), (166, 170), 171, (188, 198)

It means first quartile is 133 and third quartile is 171.

The interquartile range is

IQR=Q_3-Q_1=171-133=38

If the data lies outside the range [Q_1-1.5(IQR),Q_3+1.5(IQR)], then the data set has outliers.

[Q_1-1.5(IQR),Q_3+1.5(IQR)]=[133-1.5(38),171+1.5(38)]

[Q_1-1.5(IQR),Q_3+1.5(IQR)]=[76,228]

It means if the data lies outside the interval [76,228], then it is an outlier.

Since 71∉[76,228], therefore only 71 is an outlier.

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