STAT 2510 EXAM 1 - AUBURN UNIVERSITY 2026 LATEST QUESTIONS AND ANSWERS| ACE YOUR GRADES.

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STAT 2510 EXAM 1 HASKELL 2026
LATEST QUESTIONS AND ANSWERS|
ACE YOUR GRADES.

Skewness distributions - correct answer -skewed to the side with
the least amount of data points
Left skew: tail of the graph skews to the left
Right skew: tail of the graph skews to the right
Symmetric: graph is even on either side, pyramid looking




Boxplots - correct answer -graph based on five-number
summary
- give a visual of measures of position and spread using quartiles
- vertical: view from low to high; lowest to greatest
- horizontal: view left to right as lowest to greatest
- Can be asymmetric: lower whisker can be longer than the higher
whisker and vice versa
- Or can be symmetric: whiskers are equal in length
Whiskers of a box plot can extend up to 1.5 IQR away from the
quartiles
Max upper whisker reach: Q3 +1.5xiqr
Max lower whisker reach: Q1-1.5xiqrh

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Parts of a boxplot - correct answer -Box area is the IQR
Ends of the box are Q1 and Q3
Line in the middle of the box is the median
The whiskers represent the minimum and maximum, and are the
areas outside the box
Dots are outliers




How to tell if the center is better defined as the mean or median -
correct answer -If the distribution is symmetric, the center is
often defined as the mean. The mean is often the same as the
median.
If the distribution is skewed or has extreme outliers, center is
often defined as the median
- Right skewed: mean>median
- Left skewed: mean<median




Which descriptions are better to use when the stats are
skewed/symmetrical? - correct answer -Median and iqr are more
robust (resistant) to skewness and outliers than mean and SD.
Therefore,