QNT 2020 VERIFIED STUDY GUIDE
Stem-and-Leaf Plot - Answers - Shows distribution while preserving raw data
Dot Plot - Answers - Displays individual data values
Histogram - Answers - Shows frequency distribution using bins
Modal Class - Answers - Bin with the highest frequency
Unimodal - Answers - Distribution with one peak
Bimodal - Answers - Distribution with two peaks
Multimodal - Answers - Distribution with many peaks
Skewness - Answers - Asymmetry of a distribution
Right-Skewed - Answers - Long right tail; mean greater than median
Left-Skewed - Answers - Long left tail; mean less than median
Symmetric - Answers - Mean approximately equal to median
Outlier - Answers - Extreme value far from most data
Box Plot - Answers - Visual display of the five-number summary
Scatter Plot - Answers - Shows relationship between two quantitative variables
Line Chart - Answers - Shows trends over time (time series)
Frequency Distribution - Answers - Counts data values within bins
Bin Width - Answers - Size of each class interval
Relative Frequency - Answers - Frequency divided by total number of observations
Percentage Frequency - Answers - Relative frequency multiplied by 100
Sturges' Rule - Answers - k ≈ 1 + 3.322 log10(n)
Mean - Answers - Arithmetic average; affected by outliers
Stem-and-Leaf Plot - Answers - Shows distribution while preserving raw data
Dot Plot - Answers - Displays individual data values
Histogram - Answers - Shows frequency distribution using bins
Modal Class - Answers - Bin with the highest frequency
Unimodal - Answers - Distribution with one peak
Bimodal - Answers - Distribution with two peaks
Multimodal - Answers - Distribution with many peaks
Skewness - Answers - Asymmetry of a distribution
Right-Skewed - Answers - Long right tail; mean greater than median
Left-Skewed - Answers - Long left tail; mean less than median
Symmetric - Answers - Mean approximately equal to median
Outlier - Answers - Extreme value far from most data
Box Plot - Answers - Visual display of the five-number summary
Scatter Plot - Answers - Shows relationship between two quantitative variables
Line Chart - Answers - Shows trends over time (time series)
Frequency Distribution - Answers - Counts data values within bins
Bin Width - Answers - Size of each class interval
Relative Frequency - Answers - Frequency divided by total number of observations
Percentage Frequency - Answers - Relative frequency multiplied by 100
Sturges' Rule - Answers - k ≈ 1 + 3.322 log10(n)
Mean - Answers - Arithmetic average; affected by outliers
