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QNT 2020 VERIFIED STUDY GUIDE

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2025/2026 Written for academic year
Institution Baruch College
Course QNT 2020
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QNT 2020 VERIFIED STUDY GUIDE

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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

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