The QA 233 (Basic Business Statistics)
Exam #1 Study Checklist
Introduction to Data & Statistics
Data, Element, Variable, Observation
Scales of Data Measurement
Nominal
Ordinal
Interval
Ratio
Qualitative vs. Quantitative Data
Cross Sectional vs. Time Series Data
The Science (and Functions) of Statistics
Census vs. Sample
Parameter vs. Statistic
Descriptive vs. Inferential Statistics
Inferential Statistics vs. Probability
Reasons for Sampling
Sampling vs. Experimentation
Descriptive Statistics - Tabular and Graphical Methods
Methods for Qualitative Data
Tabular Methods
(Absolute) Frequency Distribution
Relative Frequency Distribution
Percentage Frequency Distribution
Graphical Methods
Bar Chart
Pie Chart
Methods for Quantitative Data
Tabular Methods
Data Array
(Absolute) Frequency Distribution
Relative Frequency Distribution
Percentage Frequency Distribution
Cumulative (Absolute) Frequency Distribution
Cumulative Relative Frequency Distribution
Cumulative Percentage Frequency Distribution
Graphical Methods
Dot Plot
Histogram
Ogive
Stem & Leaf Plot
Graphical Methods for Multiple Variables
Contingency Table
Scatter Diagram
Runs Plot
Star Glyphs
Descriptive Statistics - Numerical Methods
Measures of Location (population and sample values)
Midrange
(Arithmetic) Mean
Trimmed Mean
Geometric Mean
Median
Mode
Percentiles
Deciles
Quartiles
Quintiles
Measures of Variation/Dispersion (population and sample values)
Range
Interquartile Range
Mean Absolute Deviation
Variance
Standard Deviation
Coefficient of Variation
Measures of other Characteristics (know the concepts, not how to calculate)
Skewness
Kurtosis
Outlier Identification
z-Score
Chebyshev's Theorem
Empirical Rule for Normally Distributed Data
Other Tools for Exploratory Data Analysis (EDA)
Five Number Summary
Box Plot
Measures of Association Between Two Variables (population and sample values)
Covariance
Correlation