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Why is it impossible to compute a T statistic for a sample that has only one score?
Wiki User
∙ 10y ago
A T test is used to find the probability of a scenario given a specific average and the number of degrees of freedom. You are free to use as few degrees of freedom as you wish, but you must have at least 1 degree of freedom. The formula to find the degrees of freedom is "n-1" or the population sample size minus 1. The minus 1 is because of the fact that the first n is not a degree of freedom because it is not an independent data source from the original, as it is the original. Degrees of freedom are another way of saying, "Additional data sources after the first". A T test requires there be at least 1 degree of freedom, so there is no variability to test for.
Wiki User
∙ 10y ago
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What is difference between statistic and statistics?
The score of each individual or a single data is called STATISTIC. As a result, STATISTICS is the act of creating, comparing, interpreting, and analyzing data. Because the population is nearly impossible to reach, statistics is concerned with the sample rather than the population.
What is the z-score for 45.00?
There is insufficient information in the question to properly answer it. In order to compute a Z score from a raw score, you need the mean and the the standard deviation, neither of which was given. Please restate the question.
How do you find the raw score when you don't have the z score?
Go back to the basic data, estimate the sample mean and the standard error and use these to estimate the Z-score.
How many points does your credit score go up when 2 items are deleted?
There's no real way to compute how many points you will see added to your score but you should see some nice movement.
Why use the T score?
T-score is used when you don't have the population standard deviation and must use the sample standard deviation as a substitute.
What statistic is produced when the difference between a score and the mean is divided by the standard deviation?
a "T" or a "Z" score. A "T" Score if comparing a sample. A "Z" Score when comparing a population. Remember, a population includes all observation, and a sample includes only a random selection of the population.
What is difference between statistic and statistics?
The score of each individual or a single data is called STATISTIC. As a result, STATISTICS is the act of creating, comparing, interpreting, and analyzing data. Because the population is nearly impossible to reach, statistics is concerned with the sample rather than the population.
What statistic is produced when the difference between a score and then mean is divided by the standard deviation?
z-score or standard score... tells you how many standard deviations away from the mean a particular number is in relations to all numbers in a population (or sample)
How is the process of determining percentiles different if you were given a sample mean rather than individual raw score?
It is impossible to determine the percentiles if you are given only the sample mean since percentiles are a measure of the spread of the data; the mean gives no information on that.
What is the z score for 0.71?
This question cannot be answered. You need the mean and standard deviation in order to compute a Z score for a Raw score. Please restate the question.
Samples of beauty pageant score sheets?
Sample score sheets for many beauty pageants can be viewed at the Related Link. Specific pageants may have sample score sheets on their websites.
What is the z-score for 45.00?
There is insufficient information in the question to properly answer it. In order to compute a Z score from a raw score, you need the mean and the the standard deviation, neither of which was given. Please restate the question.
Where can you find a free sample business plan for an NGO?
Some places to find a free sample business plan for an NGO is the internet, Insurance companies, and SCORE. SCORE is a non profit organization.
What is the p value of a test statistic of 1.369?
The answer depends on what the test statistic is: a t-statistic, z-score, chi square of something else.
What is safety t score?
Because t-score isn't as accurate as z-score, you should use 40 as a safety sample size, rather than 30 as you would for a z-score.
How do you find the raw score when you don't have the z score?
Go back to the basic data, estimate the sample mean and the standard error and use these to estimate the Z-score.
How many points does your credit score go up when 2 items are deleted?
There's no real way to compute how many points you will see added to your score but you should see some nice movement.
