Visualizing Data

Question 1

what is data visualization?

Answer 1

using tables, graphs, and other figures to represent your data

Question 2

purpose of data visualization

Answer 2

tables: convey information in a condensed way that is easy to find

figures: display data that is more intuitive than statistics alone, also helpful for understanding interactions

Question 3

how to visualize frequency data

Answer 3

histogram: frequency in terms of counts

pie chart: frequency in terms of percentage

Question 4

how to visualize correlational data

Answer 4

scatterplot w/ line of best fit: pattern of results across 2 variables (shows outliers and trend)

correlation table/matrix: display multiple correlations at once for easy viewing

Question 5

how to visualize experimental data

Answer 5

bar graphs with error bars: displays means and SE or CI

violin plots: displays means of groups, but also shows the distribution and shape of data

line graph: examine interaction between a categorical and continuous variable

Question 6

problems with bar graphs

Answer 6

-doesn’t show spread/range of data
-doesn’t show shape of distribution
-doesn’t show individual data points

(use violin plots instead)