Ch.2 Measures of location & spread Flashcards
1
Q
how is the mean written
A
as x̄ (x bar)
2
Q
what are the measures of spread linked to the median?
A
the range, interquartile range and interprecentile range
3
Q
what are the measures of spread linked to the mean?
A
variance and standard deviation
4
Q
if data is coded using the formula
y = (x - a) ÷ b
how would you find the mean and standard deviation?
A
mean of coded data would be
ȳ = (x̄ - a) ÷ b
standard deviation of coded data would be σy = σx ÷ b
