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What is an example of two variables that would be positively correlated and two variables that could be negatively correlated?
Wiki User
∙ 15y ago
False. Correlation coefficient as denoted by r, ranges from -1 to 1. Coefficient of determination, or r squared ranges from 0 to 1. I note that x,y data points that have a high negative correlation would plot with a negative trend or a negatively sloped line if a best fit regression line is determined. I note also that x,y data points with a high positive correlation would plot with a positive trend or positively sloped line if a best fit regression line is determined. The coefficient of determination for r = 0.9 and r= -0.9 would be 0.81.
Wiki User
∙ 15y ago
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What is the meaning of confounding in statistics?
In statistics. a confounding variable is one that is not under examination but which is correlated with the independent and dependent variable. Any association (correlation) between these two variables is hidden (confounded) by their correlation with the extraneous variable. A simple example: The proportion of black-and-white TV sets in the UK and the greyness of my hair are negatively correlated. But that is not because the TV sets are becoming colour sets and so my hair is loosing colour, nor the other way around. It is simply that both are correlated with the passage of time. Time is the confounding variable in this example.
True or false a hard test is an example of a positively skewed distribution?
Yes
What is the meaning of quantitative variables?
They are variables that can take quantitative - as opposed to qualitative values. For example, the colour of peoples' eyes is a qualitative variable, but their age or shoe size are quantitative variables.
What is an example of negatively skewed distribution?
x axis: age of retirement y axis: number of people By Mr. Hsia @MDHS
What is The measure of the relationship between two variables?
correlation * * * * * Only if the relationship is linear. For example, the correlataion between y and x when y = x2 is zero. But a very strong relationship between the two variables.
Is bacteria negatively charged or positively charged?
I would say, bacteria is positively charged. i suspected it was positively charged also may be, however; if it were to be negatively charged, could it still adsorb through a reversal process to a negative surface (clay for example?)
What does it mean for economic variables to positively related?
if two variables are positively related,it means that the two variables change in the same direction.that is,if the value of one of the variables increases,the value of the other variable too will increase.for example,if employment as an economic variable increases in a country,and price of goods too increases then we can say that these two variables(employment and price) are positively related
What is the meaning of confounding in statistics?
In statistics. a confounding variable is one that is not under examination but which is correlated with the independent and dependent variable. Any association (correlation) between these two variables is hidden (confounded) by their correlation with the extraneous variable. A simple example: The proportion of black-and-white TV sets in the UK and the greyness of my hair are negatively correlated. But that is not because the TV sets are becoming colour sets and so my hair is loosing colour, nor the other way around. It is simply that both are correlated with the passage of time. Time is the confounding variable in this example.
What are examples of two variables that are likely to be correlated because they are both changing over time -?
Velocity and distance of an accelerating object would be one example.
What is a example of the effect of negatively charged object on positively charged object?
In practical life , it is not possible to identify the negative and positive charges.The positive and negative charges are identified only experimentally.So, practical example of this is not possible.But I can tell that a negatively charged object and positively charged object attract each other.for A+ lost electrons
What does a relationship between two correlated variables have?
Correlation between two variables implies a linear relationship between them. The existence of correlation implies no causal relationship: the two could be causally related to a third variable. For example, my age is correlated with the number of TV sets in the UK but obviously there is no causal link between them - they are both linked to time.
What charge does a molecule have?
Solute molecules can be positively charged, negatively charged, or neutral. For example, dissolving sodium chloride in water produces positively charged sodium cations and negatively charged chloride anions. Dissolving sucrose (table sugar) in water produces only dissolved neutral sucrose molecules.
What is a example of effect of negatively charged object on negatively charged object?
In practical life , it is not possible to identify the negative and positive charges.The positive and negative charges are identified only experimentally.So, practical example of this is not possible.But I can tell that a negatively charged object and positively charged object attract each other.for A+ lost electrons
If a chlorine atom were to attract an electron from sodium the chlorine atom would become blank charged?
positively
How is water an example of polar molecule?
The oxygen atom, which is negatively charged, is on one end ("pole") of the molecule, and the hydrogen atoms, which are positively charged, are on the other pole.
Attraction and repulsion?
Attraction and repulsion, in physics means, is when two objects attract and repel one another. For example, an When a negatively charged rod is brought near an electroscope with negatively charged leaves, the leaves will repel. Same goes for when a positively charged rod is brought near an electroscope with positively charged leaves, the leaves will repel. But if a negatively charged rod is brought near an electroscope with positively charged leaves, the leaves will attract. Kind of like opposites attract, and likeness repels.
Which is an example of cation ammonium hydroxide chloride or fluoride?
The only cation (positively charged ion) is ammonium NH4+ the others are all anions (negatively charged ions)
