Critical Concepts & Data Analysis

Front

What is standard deviation?

Back

Standard deviation is a measure of the amount of variation or dispersion in a set of values. A low standard deviation means that the values tend to be close to the mean, while a high standard deviation indicates that the values are spread out over a wider range.

Front

How do you determine if a sample is biased?

Back

A sample is biased if it does not accurately represent the population from which it is drawn. For example, surveying only people leaving a bicycle repair store would likely result in a biased sample regarding opinions on bike paths.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is the mean?

Back

The mean is the average of a set of numbers, calculated by adding all the values together and dividing by the number of values.

Tags

CCSS.6.SP.B.5C

Front

What is the median?

Back

The median is the middle value in a data set when the numbers are arranged in order. If there is an even number of values, the median is the average of the two middle numbers.

Tags

CCSS.6.SP.B.5C

Front

What is the mode?

Back

The mode is the value that appears most frequently in a data set. A set of numbers may have one mode, more than one mode, or no mode at all.

Tags

CCSS.6.SP.B.5C

Front

What is the range of a data set?

Back

The range is the difference between the highest and lowest values in a data set. It gives a measure of how spread out the values are.

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Front

What is an outlier?

Back

An outlier is a data point that differs significantly from other observations in a data set. Outliers can skew the results of statistical analyses.

Front

Which measure of central tendency is least affected by outliers?

Back

The median is the measure of central tendency that is least affected by outliers, as it is based on the middle value rather than all values.

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

Front

What is a fair sample?

Back

A fair sample is one that accurately reflects the characteristics of the population from which it is drawn, allowing for unbiased conclusions.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is data collection?

Back

Data collection is the process of gathering information from various sources to analyze and draw conclusions.