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Gr 11 Math Ch 11: Identification of Outliers

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Gr 11 Math Ch 11: Identification of Outliers

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Questions and Answers

What are the boundaries used to identify outliers in a dataset?

Q1 - 1.5 × IQR and Q3 + 1.5 × IQR (correct)
Mean - SD and Mean + SD
Minimum - IQR and Maximum + IQR
Q1 - IQR and Q3 + IQR

What is the purpose of a scatter plot in relation to outliers?

To identify outliers in bivariate data (correct)
To identify outliers in univariate data
To calculate the mean of a dataset
To show the relationships between three variables

What is the formula to calculate the Interquartile Range (IQR)?

Q3 - Q1 (correct)
Q2 - Q1
Q3 × Q1
Q3 + Q1

What is the characteristic of an outlier in a dataset?

A data value that significantly deviates from the other values (A) Signup and view all the answers

What is the purpose of the five-number summary in identifying outliers?

To calculate the boundaries for outliers (D) Signup and view all the answers

Where are outliers often located in a box plot?

Near the whiskers (B) Signup and view all the answers

What is the primary use of the five-number summary in identifying outliers?

To determine the boundaries for outliers (A) Signup and view all the answers

In a box-and-whisker diagram, where are the outliers typically located?

Near the whiskers (D) Signup and view all the answers

What type of data is typically displayed in a scatter plot?

Bivariate data (B) Signup and view all the answers

What is the purpose of identifying outliers in a dataset?

To gain insights into the data distribution (D) Signup and view all the answers

What is the term for the difference between the third quartile and the first quartile?

Interquartile Range (IQR) (B) Signup and view all the answers

What is the purpose of calculating the Interquartile Range (IQR)?

To calculate the lower and upper boundaries for outliers (C) Signup and view all the answers

What is the significance of the lower boundary in identifying outliers?

It is the value below which all data points are considered outliers (C) Signup and view all the answers

What is the purpose of the box-and-whisker diagram in relation to outliers?

To visualize the distribution of the data and identify outliers (C) Signup and view all the answers

What is the relationship between the Interquartile Range (IQR) and the identification of outliers?

The IQR is used to identify the boundaries for outliers (B) Signup and view all the answers

What is the characteristic of an outlier in a scatter plot?

It is a data point that lies far from the general trend or pattern of the rest of the data (D) Signup and view all the answers

What is the significance of the upper boundary in identifying outliers?

It is the value above which all data points are considered outliers (C) Signup and view all the answers

What is the purpose of calculating the five-number summary?

To calculate the Interquartile Range (IQR) and identify outliers (D) Signup and view all the answers

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