Representing Data
A visual that shows data in categories
Bar Graph
The measure of the middle of a set of data (median, mean)
one Data point that is far from the others
outlier
when one set of data can be positively shown to have caused another set to occur.
Causation
A table where each cell in the table has the frequencies of two categories of data
two way frequency table
A visual that shows data to appear in ranges (numerical data)
Histogram
A measure of spread to allow for comparisons to the overall data set
Standard Deviation
if the mean is greater than the median,
the data is skewed to the right (tail on the right)
a measure or degree of relation between two sets of data.
Correlation
The proportional values found in the interior of a relative frequency table
joint relative frequency
Data represented with points on a graph
Data Graph
68:1 95:2 99.7:3
Empirical Rule
A data set going to the top right corner of the plot
Positive Correlation
an experiment or controlled study can prove
causation
The values shown in the column and row totals of a relative frequency table
Marginal relative frequency
A visual that divides a list of data into four sections called quartiles
Box Plot
Used to measure the center of data when it is symmetrical
Mean
A data set going to the bottom right of the plot
Negative correlation
Observational Studies can prove
correlation
When two factors have a higher percentage,
they can be said to have a strong association, or correlation, with each other.
A visual that shows the frequency of which something occurs
Dot plot
Used to measure the center of data when it is uneven
Median
Data scattered all over the plot
No correlation
A line drawn through the points on a scatter plot to summarize the relationship between the two sets of data
Line of Best Fit
shows each frequency as a proportion of the whole data sample size
relative frequency table