Statistics Unit 1 Flashcards

Questions and Answers

If the correlation coefficient, $r$, is 0.82, the two variables are said to have ___ relationship.

a strong positive

Which graph shows a moderate negative correlation?

A good way to avoid bias when collecting samples is to ___.

collect a large sample number

What does no correlation indicate?

C Signup and view all the answers

Finding out who funded the research helps to see if there is any ___ in the results.

bias Signup and view all the answers

What does bias in data interpretation mean?

anything that can cause an error in the interpretation of data Signup and view all the answers

What is a representative sample?

an unbiased sample that is a good depiction of the population as a whole Signup and view all the answers

What characterizes a distribution curve?

that most of the results are closer to the mean Signup and view all the answers

Developing nations typically have a _____ ecological footprint than developed nations.

smaller Signup and view all the answers

_____ nations typically have greater human population growth than that area's resources can support.

Developing Signup and view all the answers

What is meant by distribution in statistics?

the relative arrangement of the data of a statistical population around the mean of the population Signup and view all the answers

What is standard deviation?

a statistical measure of how spread out the results are from the mean Signup and view all the answers

What does statistics involve?

the collection and analysis of data Signup and view all the answers

What is cost-benefit analysis?

an analysis that weighs the cost of different solutions against the benefits that will result from those solutions Signup and view all the answers

What defines a developed nation?

a nation that typically has higher average income, slow population growth, and many different types of economic activity Signup and view all the answers

What characterizes a developing nation?

a nation that typically has lower average income, high rate of population growth, and fewer types of economic activity Signup and view all the answers

What is ecological footprint?

a calculation of the amount of land and other resources needed to support one person in one country Signup and view all the answers

What does ecological risk assessment evaluate?

an evaluation of how the environment might change if it is impacted in some way Signup and view all the answers

What is the law of supply and demand?

an economic principle that states: the more demand there is for something with a limited supply, the higher the price will be Signup and view all the answers

_____ nations typically use natural resources at a rate faster than those resources can be renewed.

Developed Signup and view all the answers

Study Notes

Correlation and Bias

A correlation coefficient of 0.82 indicates a strong positive relationship between two variables.
To avoid bias in sampling, it is recommended to collect a large sample size.
Research funding sources can reveal potential bias in results, impacting data interpretation.
Bias can lead to errors in interpreting data, affecting research outcomes.

Sampling and Representation

A representative sample accurately reflects the population, minimizing bias.
A distribution curve illustrates that most results cluster close to the mean.
"No correlation" refers to a lack of relationship between two variables.

Ecological Footprint and Development

Developing nations typically have a smaller ecological footprint compared to developed nations.
Developed nations experience human population growth that exceeds sustainable resources.

Statistical Concepts

Distribution describes how data is arranged around the population mean.
Standard deviation measures the spread or variability of results from the mean.
Statistics encompasses data collection and analysis methodologies.

Economic Analysis

Cost-benefit analysis evaluates the pros and cons of various solutions.
The law of supply and demand indicates prices rise when demand surpasses limited supply.

Differences in Nations

Developed nations have higher average incomes, slower population growth, and diverse economic activities.
Developing nations experience lower average incomes, high population growth rates, and limited economic diversity.

Ecological Considerations

The ecological footprint quantifies the land and resources required to sustain one individual's lifestyle in a specific country.
Ecological risk assessment evaluates potential environmental changes due to various impacts.

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Description

Test your understanding of key concepts in statistics with these flashcards from Unit 1. Covering topics like correlation coefficients, sample bias, and relationships between variables, this quiz will help reinforce your knowledge. Perfect for anyone looking to prepare for exams or refresh their statistics skills.