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Generally, there is no problem comparing means for groups of different sizes unless the sizes of some groups are extremely different from the others. You can consider the mean of a larger group as being weightier than the means of smaller groups. What you cannot do is take a collection of means and calculate a 'grand mean' by simply calculating the mean of the means. This would be 'weighing' all the means as the same, or in other words, assuming that each of the the means was generated by the same number of scores. It helps to compare variance or standard deviation as well as means, because this tells you something about possible problems with selection or group size. Statistical software packages make this easier if you are comparing means in the context of a stats test. Whether or not you can treat the groups as having equal variances will have some impact on your test's confidence levels.
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How can you use rate to compare the cost of two boxes of cereal that are different sizes?
you can use a rate by normally dividing it [the two different sizes of the boxes
How can you use a rate to compare the cost of two boxes of cereal that are different sizes?
you can use a rate by normally dividing it [the two different sizes of the boxes
How can you use a rate to compare the costs of two boxes of cereal that are different sizes?
you can use a rate by normally dividing it [the two different sizes of the boxes
What websites compare car rental rates?
Orbits and Priceline offer the ability to compare against at least five different car rental companies. These can compare different sizes and sometimes brands of cars.
Where can someone compare prices for a Lamborghini?
To compare prices for Lamborghini cars, one should visit the local Lamborghini dealership or garage. They will be able to compare different sizes and styles.
How do the incident angle sizes and angle of reflection sizes compare?
They have the same measure.
What is the definition of different proportions in geometry?
This means that the different proportions are not the same. You could have different sizes or have the shapes change unproportionally.
How do the sizes of the eggs compare to the nest they are found in?
how do the sizes of egg compared to nest they are found in
Does it matter to have equal volume when comparing density?
No, you can compare densities for objects of different sizes. Just divide mass by volume for each object.
What are good statistics to compare?
penis sizes in youths
How do the sizes of the four inner planets compare?
they are small
Two elements that have atoms of verry diffrent sizes means that the cast iorn is likely what?
Two elements that have atoms of very different sizes means that the cast iron is likely a substitutional alloy.
