Measures of Central Tendency (Grade 12 NSC Matric Mathematical Literacy): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is a measure of central tendency?
What is a measure of central tendency?
A single number showing typical value
How do you calculate the mean?
How do you calculate the mean?
Sum of values ÷ number of values
Which measure is easily influenced by outliers?
Which measure is easily influenced by outliers?
Mean
Find the median of: 2, 5, 7, 9, 11
Find the median of: 2, 5, 7, 9, 11
7
How do you find the median with an even number of values?
How do you find the median with an even number of values?
Average the two middle values
Can a data set have more than one mode?
Can a data set have more than one mode?
Yes, if multiple values appear most
When should you use the median?
When should you use the median?
When data contains outliers or is skewed
When is the mode most useful?
When is the mode most useful?
For categorical data
In the school grant example with 21 values, what was the mode?
In the school grant example with 21 values, what was the mode?
3
What must you do before finding the median?
What must you do before finding the median?
Arrange data in ascending order