data analysis descriptive data Flashcards
1
Q
mean calc
A
add all numbers
divide by amount of numbers
2
Q
median calc
A
lowest to highest than find central value
3
Q
mode calc
A
most frequently occurring value
4
Q
measures of dispersion - range
A
minus lowest score from highest
5
Q
measures of dispersion- standard deviation
A
square root of variance calculates SD -
low SD = more data clustered close to mean, hence there’s less data spread
6
Q
positive skew
A
- data all on right side
7
Q
negative skew
A
all the data on the left
