Question

[Zaljc]

Hey guys,

Just to be 100% sure-

Numerical Data-
Interpretation we use: mean/median/range/presence of outliers/skews/five number summary is used.

Categorical data-
Interpretation we use- just the mode?


I’m really confused about what to use for what. Has there ever been a question where it said interpret the graph but it was categorical? Did people just put down the mode?

[MissSmiley]

Hey guys,

Just to be 100% sure-

Numerical Data-
Interpretation we use: mean/median/range/presence of outliers/skews/five number summary is used.

Categorical data-
Interpretation we use- just the mode?


I’m really confused about what to use for what. Has there ever been a question where it said interpret the graph but it was categorical? Did people just put down the mode?

Yes, you're right with your numerical data interpretations. (jus to build on that, I'm sure you've just mentioned a few examples here, but you know that you can use the 'r' value and 'r^2' value as well) so just making sure you don't miss anything! (not that you would

With categorical data, the categories' frequencies are measured in numbers, and because it can be represented in bar graphs, frequency tables and pie graphs, they could very well give you just the frequency (basic counting), the mean, the median or the mode of each category.
So don't always limit analysing the mode of categorical data.
(I've attached a image where they've given you the 'median frequency,' so that you can have a visual example of my interpretation)

Yes, a percentage segmented bar chart can be a really common example for SACs and Exams, where you'd have to work out the individual percentages of every category and comment and compare. (sometimes you'd also have to state if the results for the different groups are a result of correlation or causation).

Hope this helps!