data and charts Flashcards
1
Q
what does it mean when the bar chart has gaps between the bars
A
data is discrete
2
Q
what does it mean when the bar chart has no gaps
A
data is continuous
it is a histogram
3
Q
qualitative data
A
words only
4
Q
quantitative data
A
numbers only
5
Q
continuous data
A
data that can be measured
6
Q
discrete data
A
data that can be counted
7
Q
steps for filling a pie chart
A
add frequency
e.g.
total = 36
number of piechart = 20
360 / 36 = 10
10 x 20 = 200 degrees
8
Q
equation for finding the median
A
N+1/2
9
Q
calculating mean
A
total data/total frequency
10
Q
how to calculate cumulative frequency
A
add current frequency alongside previous frequency
11
Q
how to find equation of a perpendicular line
A
reciprocate gradient
