Percentiles (Leaving Cert Mathematics): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does a percentile indicate in a data set?
What does a percentile indicate in a data set?
The relative standing of a data point
The 50th percentile is also known as what?
The 50th percentile is also known as what?
The median
What percentage of data lies below Q1 (the first quartile)?
What percentage of data lies below Q1 (the first quartile)?
25%
What percentage of data lies below Q3 (the third quartile)?
What percentage of data lies below Q3 (the third quartile)?
75%
How many equal parts do percentiles divide data into?
How many equal parts do percentiles divide data into?
100 parts
What is the first step in calculating a percentile?
What is the first step in calculating a percentile?
Arrange data in ascending order
In the formula , what does represent?
In the formula , what does represent?
The number of data points
What should you do if the position is not an integer?
What should you do if the position is not an integer?
Take average of two closest points
For , what position does the 25th percentile occupy using ?
For , what position does the 25th percentile occupy using ?
2.5
For data 4, 8, 12, 16, 20, what is the 50th percentile?
For data 4, 8, 12, 16, 20, what is the 50th percentile?
12