Introduction To Statistics at Nigerian Turkish Nile University | Flashcards & Summaries

Lernmaterialien für Introduction to Statistics an der Nigerian Turkish Nile University

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Coefficient of determination 

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this is the degree of change or variability on the variability of the dependent variable or regressand  as was explained by the estimation equation. 

It tells us how much an estimated equation explains change on the dependent variable 

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Examples of positive correlation 

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  • Heights and weights, 
  • The price of normal goods and services would normally change in the same direction with the supply of those goods; Price and quantity supplied  when the supplier is rational and the good is a normal good.
  • Family income and expenditure on luxury items 
  • Amount of rainfall and yield of crop (up to a point)
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types of data

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  1. primary data
  2. secondary data 
  3. panel data/ pooled data
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what 2 methods do we use to find simple corellation?

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  • the Pearson method (parametric/parametricism)
  • the Rank method (spearman rank)
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Partial/ multiple correlation 

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it examines the relationship amongst variables 

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What can we conclude if the value of x is zero in the equation Y=a+bx?

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we can conclude that Y is equal to a 

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Method of data collection 
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  • Personal interview 
  • Group discussions or interviews 
  • Experiment 
  • Direct observation 
  • Use of questionnaire 
  • Use of telephone 
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What to do when values on the table do not align and when class size is a decimal
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You count from the next number after the one being considered and you approximate the class size you have obtained 
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difference between parameter and statistic 

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A statistic is a characteristic of a sample while a parameter is a characteristic of a population.

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types of categorical variables 

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  • nominal and 
  • ordinal 
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Methods of data presentation 
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  • Textual method of data presentation 
  • Tabular method of data presentation 
  • Semi-tabular method of data presentation 
  • Graphical/chart method of data presentation 
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Data language 
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These are numbers or measurements of variables which are collected as a result of observation 
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Beispielhafte Karteikarten für deinen Introduction to Statistics Kurs an der Nigerian Turkish Nile University - von Kommilitonen auf StudySmarter erstellt!

Q:

Coefficient of determination 

A:

this is the degree of change or variability on the variability of the dependent variable or regressand  as was explained by the estimation equation. 

It tells us how much an estimated equation explains change on the dependent variable 

Q:

Examples of positive correlation 

A:
  • Heights and weights, 
  • The price of normal goods and services would normally change in the same direction with the supply of those goods; Price and quantity supplied  when the supplier is rational and the good is a normal good.
  • Family income and expenditure on luxury items 
  • Amount of rainfall and yield of crop (up to a point)
Q:

types of data

A:
  1. primary data
  2. secondary data 
  3. panel data/ pooled data
Q:

what 2 methods do we use to find simple corellation?

A:
  • the Pearson method (parametric/parametricism)
  • the Rank method (spearman rank)
Q:

Partial/ multiple correlation 

A:

it examines the relationship amongst variables 

Mehr Karteikarten anzeigen
Q:

What can we conclude if the value of x is zero in the equation Y=a+bx?

A:

we can conclude that Y is equal to a 

Q:
Method of data collection 
A:
  • Personal interview 
  • Group discussions or interviews 
  • Experiment 
  • Direct observation 
  • Use of questionnaire 
  • Use of telephone 
Q:
What to do when values on the table do not align and when class size is a decimal
A:
You count from the next number after the one being considered and you approximate the class size you have obtained 
Q:

difference between parameter and statistic 

A:

A statistic is a characteristic of a sample while a parameter is a characteristic of a population.

Q:

types of categorical variables 

A:
  • nominal and 
  • ordinal 
Q:
Methods of data presentation 
A:
  • Textual method of data presentation 
  • Tabular method of data presentation 
  • Semi-tabular method of data presentation 
  • Graphical/chart method of data presentation 
Q:
Data language 
A:
These are numbers or measurements of variables which are collected as a result of observation 
Introduction to Statistics

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