Describing Distributions (Leaving Cert Mathematics): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What are the three key features used to describe a distribution?
What are the three key features used to describe a distribution?
Shape, centre, and spread
In a left-skewed distribution, where does the long tail extend?
In a left-skewed distribution, where does the long tail extend?
To the left
How does the mean compare to the median in left-skewed data?
How does the mean compare to the median in left-skewed data?
Mean is less than median
In a right-skewed distribution, where is most of the data located?
In a right-skewed distribution, where is most of the data located?
On the left
Why is the mean greater than the median in positively skewed data?
Why is the mean greater than the median in positively skewed data?
Positive outliers pull mean higher
What describes a distribution with two or more peaks?
What describes a distribution with two or more peaks?
Bimodal or multimodal
Which measure of centre is the arithmetic average?
Which measure of centre is the arithmetic average?
Mean
What does the interquartile range (IQR) represent?
What does the interquartile range (IQR) represent?
Range of middle 50% of data
What is the range of this dataset: ?
What is the range of this dataset: ?
What does standard deviation measure?
What does standard deviation measure?
Average distance from mean
What are outliers?
What are outliers?
Values far from rest of data
Which graphical tool displays spread, median, and potential outliers?
Which graphical tool displays spread, median, and potential outliers?
Box plots