Exploring data with graphs and numerical statistics
11 important questions on Exploring data with graphs and numerical statistics
When is a distribution called unimodal, and when is it called bimodal?
Is this distribution skewed to the left or to the right.
What is a trend?
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What does the median being resistent to extreme observations mean?
What is described when we talk about the pth percentile?
What is the interquartile data? aka IQR
If the iqr is larger than the iqr in a different group or research does that mean the data is more varied or less varied than this other group or research.
How can you check if an observation is an outlier?
How do you calculate the whiskers of a boxplot?
What are the pros and cons of a boxplot compaared to a histogram?
- box plots are better for identifying potential outliers.
What is the z score, how is it calculated (describe symbols)
- z = (x-^x^)/s
- x = observation
- ^x^ = mean
- s = standard deviation
The question on the page originate from the summary of the following study material:
- A unique study and practice tool
- Never study anything twice again
- Get the grades you hope for
- 100% sure, 100% understanding
