Measures of dispersion for grouped data (AQA GCSE Statistics): Flashcards
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Practise the cards
10 cards from this deck
How to find the 4th decile for 50 data values?
How to find the 4th decile for 50 data values?
Position = 4/10 * 50 = 20th value on the graph.
What is the formula for the 36th percentile?
What is the formula for the 36th percentile?
Position = 36/100 * n, where n is total data values.
How to find the 80th percentile in 150 data values?
How to find the 80th percentile in 150 data values?
80th percentile is the 120th value in ordered data.
How to find the 20th percentile from a frequency table?
How to find the 20th percentile from a frequency table?
Position = 20/100 * total frequency.
What is the interpercentile range between 20th and 80th?
What is the interpercentile range between 20th and 80th?
Subtract 20th percentile value from 80th percentile value.
How do you find the 6th decile for 150 data values?
How do you find the 6th decile for 150 data values?
Position = 6/10 * 150 = 90th value on the graph.
What does a decile represent in data distribution?
What does a decile represent in data distribution?
A decile splits data into 10 equal parts.
What is the maximum decile number you can find?
What is the maximum decile number you can find?
The maximum is the 9th decile, not the 10th.
How to read values from a cumulative frequency graph?
How to read values from a cumulative frequency graph?
Draw horizontal to curve, then vertical to axis.
What is the formula for finding decile positions?
What is the formula for finding decile positions?
Decile position = d/10 * n, where d is decile number.