Inferential Statistics Definition - Revision history

Jblueteach1 at 17:44, 5 May 2022

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Admin at 17:51, 11 May 2020

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Orynzbelt at 22:38, 21 April 2020

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Admin: Created page with "'''Inferential statistics''' is defined as the branch of statistics that is used to make inferences about the characteristics of a populations based on sample data. • The..."

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Created page with "'''Inferential statistics''' is defined as the branch of statistics that is used to make inferences about the characteristics of a populations based on sample data. • The..."

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'''Inferential statistics''' is defined as the branch of statistics that is used to make inferences about the characteristics of a populations based on sample data.

• The goal is to go beyond the data at hand and make inferences about population parameters.

• In order to use inferential statistics, it is assumed that either random selection or random assignment was carried out (i.e., some form of randomization must is assumed).

''contributed by Karen Burke, EdD''

== Parametric versus non-parametric tests ==

Many statistical tests are based upon the assumption that the data are sampled from a normal distribution. These tests are referred to as parametric tests. Parametric tests are generally used on interval or ratio data.

Tests that do not make assumptions about the population distribution are referred to as nonparametric tests. Non-parametric tests are used when data ranks the outcome variable from low to high (ordinal level data) or if data groups are nominal.

''contributed by Frank LaBanca, EdD''

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 [[Image:Chosingstat.gif]]
-Inferential statistics example
+''Example:''
 Inferential statistics is data based upon a sample of a specified population. The objective of inferential statistics is to gain insights about a population. For example, if the researcher wanted to know if more customers would go to the Shelton Starbuck's on a double reward points day (usually Wednesday or Thursday) in contrast to a non-double rewards days between the hours of 6 A.M. - 8 A.M. The researcher would tally the number of patrons on the observed days and  a one sample T-test to record and analyze the data.  From this, the researcher will learn if double reward days increases business.
-"contributed by Héctor Huertas"
+''contributed by Héctor Huertas''

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 Inferential statistics example
-Inferential statistics is data based upon a sample of a specified population. The objective of inferential statistics is to gain insights about a population. For example, if the researcher wanted to know if more customers would go to the Shelton Starbuck's on a double reward points day (usually Wednesday or Thursday) in contrast to a non-double rewards days between the hours of 6 A.M. - 8 A.M. The researcher would tally the number of patrons on the observed days and  a T-test to record and analyze the data.  From this, the researcher will learn if double reward days increases business.
+Inferential statistics is data based upon a sample of a specified population. The objective of inferential statistics is to gain insights about a population. For example, if the researcher wanted to know if more customers would go to the Shelton Starbuck's on a double reward points day (usually Wednesday or Thursday) in contrast to a non-double rewards days between the hours of 6 A.M. - 8 A.M. The researcher would tally the number of patrons on the observed days and  a one sample T-test to record and analyze the data.  From this, the researcher will learn if double reward days increases business.
 "contributed by Héctor Huertas"

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 [[Image:Chosingstat.gif]]
 Inferential statistics is data based upon a sample of a specified population. The objective of inferential statistics is to gain insights about a population. For example, if the researcher wanted to know if more customers would go to the Shelton Starbuck's on a double reward points day (usually Wednesday or Thursday) in contrast to a non-double rewards days between the hours of 6 A.M. - 8 A.M. The researcher would tally the number of patrons on the observed days and  a T-test to record and analyze the data.  From this, the researcher will learn if double reward days increases business.
 "contributed by Héctor Huertas"

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		+	Inferential statistics is data based upon a sample of a specified population. The objective of inferential statistics is to gain insights about a population. For example, if the researcher wanted to know if more customers would go to the Shelton Starbuck's on a double reward points day (usually Wednesday or Thursday) in contrast to a non-double rewards days between the hours of 6 A.M. - 8 A.M. The researcher would tally the number of patrons on the observed days and a T-test to record and analyze the data. From this, the researcher will learn if double reward days increases business.
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		+	"contributed by Héctor Huertas"

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 ''contributed by Karen Burke, EdD''
+Descriptive statistics describes data and inferential statistics allows one to make predictions about that data. In inferential statistics take data from samples and make generalizations about it. ''contributed by Jennifer Blue''
 == Parametric versus non-parametric tests ==