If there is a perfect association between sexual attraction and accelerated heartbeat, then sex is unhealthy   there is strong evidence that sexual attraction and accelerated heartbeat are causally related   if there is no sexual attraction, the heartbeat never accelerates   whenever the heartbeat accelerates, people become sexually attractive

Q: Explain how causal effects can be estimated that depend on observables?

A: Causal effect means something has happened or is occurring, depending on something that has occurred…

Q: Due to pollution 25 percent of the people in a country suffer from a lung related desease and 10…

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: You found a strong positive correlation between the number of home-game wins for your school’s…

A: Solution Given a high-number of home game wins causes high home-game attendance.

Q: virus is that these cells die. In this study of the effectiveness of a new anti-viral drug on HIV,…

A: In this case, the baseline (x) is the independent variable, and the one year follow-up values (y) is…

Q: Carl commented online that they noticed that the greater the number of firefighters at a fire, the…

A: Correlation is a technique that measures the linear relationship between two or more variables. It…

Q: Olivia sees that in her data there is a relationship between regular exercise and a range of health…

A: Solution Given range of health and regular exercise are significantly related.

Q: ion between two variables is (-1) then the two variables are said to

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Q: How do you detect the presence of serial correlation? and state 3 ways of correcting the problem

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Q: What are the consequences of the presence serial correlation?

A: Introduction Statistics is a field which involves collection, arrangement and analysis of the data…

Q: in 2019, investigators from brown university would like to determine the relationship of nail polish…

A: Given:  n = 1000 α = 0.01

Q: based on these findings, at least two hypotheses that you are testing in this project. Your…

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Q: True or false: If the correlation coefficient between two variables is 0, then there is no linear…

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Q: The genetic of a human is the source of a disese., but only if you have the gene type a. The…

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Q: an experimental study, the variables in a correlational study are not manipulated by the researcher.

A: In a correlational study, the investigator observes or measures two variables to know about the…

Q: Define Karl Pearson's coefficient of correlation and discuss the methods of studying it?

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Q: Another researcher also decides to conduct a study to observe the association between smoking…

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Q: Because a partial correlation considers the influence of a third variable, it is possible to have a…

A: From the above question Because a partial correlation considers the influence of a third variable,…

Q: My previous classmate researched on the relationship between children’s nutrition and their…

A: Independent variable : The independent variable (IV) is the characteristic of a psychological…

Q: What does it mean when one of the two main effects is significant?

A: Given problem Given that   What does it mean when one of the two main effects is significant ?

Q: Researchers have shown that there is a positive correlation between average fat intake and the…

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Q: A recent study compared the heart rates of 19 infants born to non smoking mothers with those of 17…

A: Confounding: In a study, confounding occurs when the apparent relationship between an explanatory…

Q: When we assess the validity of a test, we usually do so by computing a correlation between test…

A: The validity of a test can be done by Correlation coefficient between test score and an external…

Q: Imagine we are investigating whether there is a relationship between IQ and annual income. Our…

A: The provided information is as follows:The correlation coefficient between annual income and IQ is…

Q: Question 2: You have two variables: 1) Death rate by state and 2) Percent of popular vote won by…

A:

Q: n what four intances can correlation analyses become very useful? Explain each of them.

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Q: Please generate two hypotheses (one positive relationship one negative) using continuous and…

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Q: Around 4,560 participants were included in a study that wanted to see the relationship on smoking…

A: Researchers arrange data in contingency table to study relationship between categorical variables.

Q: A strong association between two variables always indicate a causal relationship. O True False

A: Given data: strong association between two variables always indicate a causal relationship. Options…

Q: Does a high positive correlation between smoking and lung cancer and prove that one cause to…

A: Introduction: Correlation: Correlation is a measure of the strength of linear association between…

Q: A correlation between two variables is spurious when the correlation disappears after adding a…

A: Given statement: A correlation between two variables is spurious when the correlation disappears…

Q: Consider a large number of countries around the world.  There is a positive correlation between the…

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Q: When performing a statistical analysis on two variables, you identify that there is a very strong,…

A: Let the two variables be X and Y When performing a statistical analysis on two variables, we…

Q: What is negatively correlated?

A:

Q: Please give a funny example of spurious correlation where cause and effect between 2 variables are…

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Q: f the correlation between two quantitative variables becomes stronger and closer to 1, then we have…

A: Correlation is defined as the linear relationship between two variables.  Causation is the…

Correlation

Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.

Linear Correlation

A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related. 

Regression Analysis

Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.