Math Exam T1
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Last updated 7:27 AM on 3/11/23
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16 Terms
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parallel lines
same gradient
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perpendicular lines
negative reciprocal gradient (1/2 → -2/1)
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formulas for perpendicular lines
m1 x m2 = -1
\
m2 = -1/m1
\
m2 = -1/m1
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mean
sum of data divided by number of data
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median
middle number/ Q2
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mode
most frequent data
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range
max-min
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IQR
Q3 - Q1
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Upper Fence (outliers)
Q3 + 1.5 x IQR
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Lower Fence (outliers)
Q1 - 1.5 x IQR
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Categorial
Not numbers- Nominal, Ordinal
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Numerical
Numbers- discrete, continuous
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Nominal
categorial, no order (eg colours)
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Ordinal
categorial, can be ordered (eg low med high)
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Discrete
Numerical, Limited values (eg children in family)
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Continuous
Numerical, any range (eg time to complete race)
Note 
Flashcards (32)