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Using the data: 2, 2, 3, 3, 3, 4, 5, 6, 6, 19

What is Q1 and Q3

3.5, 6.5

2, 10

3, 6

2, 5

2 Answers

2 votes
Q1 = 3
Q3 = 6

Hope this helps!
User Audiodude
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5 votes

Answer: Third Option


Q_1=3


Q_3=6

Explanation:

Notice that we already have the data sorted from least to greatest.

Now to find Q1 and Q3 we can use the following formulas

For a set of data ordered from least to greatest of the form
X_1, X_2, ..., X_n

Where n is the total number of data


Q_1=X_{(1)/(4)(n+1)}

In this case
n=10

So:


Q_1=X_{(1)/(4)(10+1)}


Q_1=X_(2.75)

Round the nearest whole and get:


Q_1=X_(3)


Q_1=3

For
Q_3 we have:


Q_3=X_{(3)/(4)(n+1)}


Q_3=X_{(3)/(4)(10+1)}


Q_3=X_(8.25)

Round the nearest whole and get:


Q_3=X_(8)


Q_3=6

User Bali
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