Descriptive Statistics Quiz

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Questions and Answers

What is the main focus of descriptive statistics?

Developing statistics based on probability theory
Using and analyzing summary statistics
Summarizing features from a collection of information (correct)
Drawing conclusions about a population

How does descriptive statistics differ from inferential statistics?

Descriptive statistics focus on drawing conclusions about a population, while inferential statistics summarize features from a collection of information
Descriptive statistics aims to summarize a sample, while inferential statistics learn about the population (correct)
Descriptive statistics use nonparametric statistics, while inferential statistics use parametric statistics
Descriptive statistics are developed on the basis of probability theory, while inferential statistics are not

What type of statistics are frequently nonparametric?

Inferential statistics
Parametric statistics
Inductive statistics
Descriptive statistics (correct)

What is typically included in papers reporting on human subjects?

<p>A table with overall sample size, sample sizes in important subgroups, and demographic or clinical characteristics (A)</p> Signup and view all the answers

What are some measures commonly used to describe a data set?

<p>Measures of central tendency and measures of variability or dispersion (A)</p> Signup and view all the answers

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Study Notes

Descriptive Statistics

Focuses on summarizing and describing the basic features of a dataset
Aims to provide a concise and meaningful summary of the data

Comparison with Inferential Statistics

Descriptive statistics describes the sample data at hand
Inferential statistics makes inferences or predictions about a population based on the sample data

Nonparametric Statistics

Frequently used when the data does not meet the assumptions of parametric tests
Does not require a normal distribution or equal variances

Reporting on Human Subjects

Typically includes information about the study participants, such as demographics and inclusion criteria
May also include information about the data collection methods and procedures

Measuring a Data Set

Common measures used to describe a dataset include:
- Measures of central tendency (mean, median, mode)
- Measures of variability (range, variance, standard deviation)
- Data visualizations (histograms, box plots, scatter plots)