N5 maths statistics
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6 Terms
How to calculate median?
Find middle number in series of numbers in order from smallest to largest. Or add together the two middle numbers and divide by two.
How calculate the mean?
Add together all the numbers in list and divide by the amount of numbers there are.
How to calculate Q1 and 3?
Split the list of ordered numbers in half, if there’s an odd amount, don’t include the middle number. Find the mean of the first section, that is Q1. Find the the mean of the second section, that is Q3.
How to calculate IQR and SIQR?
Q3 - Q1 = IQR and half that is SIQR
How to layout box plots?
Set out even scale, mark lowest point and highest point. Mark Q1, median and Q3, those last three will be the box, with a line for where the mean is.
what are box plots also referred to as?
Box- whisker diagrams
Note 
Flashcards (22)