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What is the difference between control samples and test experimental samples?
It calculates the difference between each set of pairs, and analyzes that list of differences. The P value answersthis question: If the median difference in the ... If your samples are small and there are no tied ranks, Prism calculates an ... The whole point of using a paired test is to control for experimental.
Definition of independent sample.?
two samples are independent if they are drawn from two different populations, and/ or the samples have no effect on each other. eg: We want to estimate the difference between the mean salaries of all male and all female executives. We draw one sample from the population of male executives and another from the population of female executives. These two samples are independent because they come from different populations and the samples have no effect on each other
How do you tell if two samples are signficantly different?
Statistical tests like t-tests or ANOVA can be used to determine if two samples are significantly different. These tests compare means of the samples, account for sample size, and calculate a p-value to determine if the difference is significant. A p-value below a chosen significance level (commonly 0.05) indicates that the samples are significantly different.
What statement best compares the masses of the two samples?
The masses cannot be compared without a balance.
What is a difference between 2 percent and 3 percent agarose gel?
The main difference between a 2% and a 3% agarose gel is the concentration of agarose in the gel. A 3% agarose gel will have a higher agarose concentration, resulting in a higher resolving power for separating larger DNA fragments compared to a 2% agarose gel. However, a higher percentage agarose gel may also have a tighter mesh size, making it harder for larger DNA fragments to migrate through the gel.
What is the difference between control samples and test experimental samples?
It calculates the difference between each set of pairs, and analyzes that list of differences. The P value answersthis question: If the median difference in the ... If your samples are small and there are no tied ranks, Prism calculates an ... The whole point of using a paired test is to control for experimental.
What is the difference between experimental replicates and experimental controls?
Replicates are "repeat" samples under a given condition.
What is the difference between grab and composite samples?
A composite sample is taken over a period of time, while a grab sample is a snap shot of what is in your well at the time you take the sample. Homeowner samples are generally grab samples.
Study the acidity of different samples of tea leaves-introduction?
A simple answer is a difference in the taste between different teas.
What is the difference between a chi-square and t-distribution?
Chi-square is a distribution used to analyze the standard deviation of two samples. A t-distribution on the other hand, is used to compare the means of two samples.
Would it be possible to tell the difference between a sample of water from Idaho and from New York?
It is possible to tell the difference between two samples of water, yes. If you have reference samples, you could even tell which of them was from where. Without reference samples, you'd have to make some guesses about what you would expect New York water to be like vs. what you would expect Idaho water to be like (I'd expect NY water to be softer, but I'm not a geologist and could easily be wrong about that.)
What the difference between gross and microscopic examination?
Gross examination is performed without the aid of magnification. Microscopic examination is performed on slides of tissue samples on the microscope.
Why do polls have different outcomes?
Because they are based on samples and outcomes vary between different samples.
What is the Difference between attribute and variable sampling?
The main difference in taking the samples is that for a variable sample, measurements of a characteristic of interest are taken, and for an attribute sample, one counts the number of units having or not having specific properties (mostly good/bad or number of flaws). Generally, attribute samples are much larger than variable samples and to be useful, need to be very large, when the proportion of bad units (or flaws) is very small.
What is a difference between a pooled variance and a combined variance?
Pooled variance is a method for estimating variance given several different samples taken in different circumstances where the mean may vary between samples but the true variance (equivalently, precision) is assumed to remain the same. A combined variance is a method for estimating variance from several samples, given the size, mean and standard deviation of each. Mathematically, a combined variance is equal to the calculated variance of the set of the data from all samples. See links.
How did the scientists verify the remains of the romanovs to be authentic?
Scientists took DNA samples from the remains of the Romanov family and compared them to DNA samples from known living relatives to know they were authentic.
Is .001 in statics from the Independent Samples t Test analysis a significant finding?
In the context of an Independent Samples t-Test, a p-value of .001 indicates a statistically significant finding, meaning there is strong evidence to reject the null hypothesis. This suggests that the difference in means between the two groups being compared is unlikely to have occurred by chance. Typically, a p-value below .05 is considered significant, so .001 is well below this threshold.
