STT 200-exam updates solution, Exams of Statistics

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2024/2025

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STT 200-exam updates solution
Bar Chart better for - Actual values
Pie Chart better for - Percentages
Contingency table is used for - two or more values
when data is small - Stem leaf and dot plot
When data is large - histogram is more useful
When skewed to the left mean is - less than median
When skewed to the right mean is - largers than media
median - middlemost data when set in increasing order
Mean - average of two middlemost observations
when N is even, you get the median but average of - the two middle numbers
Mean is more outlier-sensitive than median - True
If you add a high outlier, mean will - rise
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STT 200-exam updates solution Bar Chart better for - Actual values Pie Chart better for - Percentages Contingency table is used for - two or more values when data is small - Stem leaf and dot plot When data is large - histogram is more useful When skewed to the left mean is - less than median When skewed to the right mean is - largers than media median - middlemost data when set in increasing order Mean - average of two middlemost observations when N is even, you get the median but average of - the two middle numbers Mean is more outlier-sensitive than median - True If you add a high outlier, mean will - rise

Symmetric distribution - mean=median IQR is more or less sensitive then range? - less (range is VERY sensitive) The unit of variance is the ______ of the unit of the original data - square When fixed consonant is multiplied... - CHANGE When fixed consonant is added - no change ( in SD, variance or range or IQR) Variance - "s" (Square root of SD)