Front
What does a right-skewed distribution indicate about the relationship between the mean and median?
Back
Mean > Median
The tail pulls the mean toward the higher values.
Public Deck
AP Statistics - 45 Key Concepts
Prepare for AP Statistics with 45 flashcards covering data analysis, probability, inference, and regression.
AnyFlashcards45 cards
Preview
Front
Standard Deviation
Back
The average distance of data points from the mean
Measures the spread or variability of a quantitative dataset.
Front
Z-score formula
Back
z = (x - μ) / σ
Indicates how many standard deviations a value is from the mean.
Front
Interquartile Range (IQR)
Back
Q3 - Q1
Represents the range of the middle 50% of the data.
Front
The 1.5 x IQR Rule for Outliers
Back
Values < Q1 - 1.5(IQR) or > Q3 + 1.5(IQR)
Used to identify potential outliers in a boxplot.
Front
What are the five numbers in a Five-Number Summary?
Back
Min, Q1, Median, Q3, Max
Provides a quick numerical description of a distribution's center and spread.
Front
Difference between a Bar Chart and a Histogram
Back
Bar charts are for categorical data; Histograms are for quantitative data
Bars touch in a histogram to show intervals of continuous data.
Front
Categorical vs. Quantitative Data
Back
Categorical: labels/groups; Quantitative: numerical measurements
Examples: Eye color (categorical) vs. Height in cm (quantitative).
Front
Effect of adding a constant to every value in a dataset
Back
Shifts center (mean/median) but leaves spread (SD/IQR) unchanged
Adding 5 to every score increases the mean by 5.
Front
Cumulative Relative Frequency Graph (Ogive)
Back
Shows the running total of relative frequencies
Used to determine percentiles for specific values.
+ 35 more cards
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