display of quantitative data + distributions Flashcards
1
Q
what is a bar chart used for?
A
discrete data - data that has been divided into categories
2
Q
what is the difference between a bar chart and a histogram?
A
the bars touch in a histogram as it is continuous data
3
Q
what are scattergrams used for?
A
show associations between co-variables
4
Q
what is a normal distribution?
A
a symmetrical pattern of frequency data that forms a bell shaped pattern
5
Q
what is a skewed distribution?
A
a spread of frequency data that is not symmetrical, all the data clusters to one end
6
Q
describe a positive skew
A
concentrated to the right
7
Q
describe a negative skew
A
concentrated on the left
