Exam (elaborations)
Stat 101 Final Exam Questions And Answers Latest Update
- Course
- STAT 101
- Institution
- University Of Pennsylvania
Stat 101 Final Exam Questions And Answers Latest Update
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Solution 2024/2025Pepper
Stat 101 Final Exam Questions And Answers
Latest Update
categorical variable charts ANS✔✔ frequency/relative frequency table, bar
chart, contingency table, mosaic plot
quantitative variable charts ANS✔✔ histogram, stem & leaf plot, box plot
robust (not affected by outliers) ANS✔✔ median, IQR
not robust (affected by outliers) ANS✔✔ mean, range, standard deviation
use what for symmetric distribution ANS✔✔ mean & standard deviation
use what for skewed distribution ANS✔✔ median, range, IQR
scatterplot description ANS✔✔ form, strength, direction/association, outliers
correlation coefficient ANS✔✔ r, measures linear association
regression line equation ANS✔✔ y hat=bo+b1x
coefficient of determination ANS✔✔ R squared, explains how much of the
variation can be explained by the regression line
, Solution 2024/2025
Pepper
large residual points ANS✔✔ outliers in y-direction
high leverage points ANS✔✔ outliers in x-direction, influential/not influential
statistic mean ANS✔✔ y bar
parameter mean ANS✔✔ mew
statistic standard deviation ANS✔✔ s
parameter standard deviation ANS✔✔ sigma
statistic proportion ANS✔✔ p hat
parameter proportion ANS✔✔ p
statistic correlation ANS✔✔ r
parameter correlation ANS✔✔ rho
trial ANS✔✔ each occasion upon which an observation is observed
outcome ANS✔✔ value of the observation
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