Term
| Margin Of Error Of A Sample Proportion |
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Definition
| The margin of error is the half-width of a confidence interval. The confidence interval for a proportion is: |
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Term
| Margin Of Error Of A Sample Mean |
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Definition
| The half-width of a confidence interval for a sample mean. |
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Term
| Binomial Distribution Formula |
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Definition
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Term
| Binomial Distribution Expected Value |
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Definition
EV(expected value)=n(sample size)p(probability)
EV=np |
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Term
| Binomial Distribution Standard Deviation |
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Definition
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Term
| Technical Conditions For 1-prop Ztest OR Interval |
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Definition
- The data must be a simple random sample from the population of interest
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Term
| Technical Conditions For T-test OR Interval |
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Definition
- The data must be a simple random sample from the population of interest.
- The sample size must be greater than or equal to 30 or the population is normally distributed.
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Term
| Technical Conditions for 2-Prop Ztest OR Interval |
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Definition
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For the test:
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For the interval:
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The data must be either randomly assigned to treatment groups or a simple random sample from both populations.
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There must be 5 successes and 5 failures in each group.
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Term
| Technical Conditions For 2-Prop Ztest OR Interval |
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Definition
- The data must be a simple random sample from the population of interest or be randomly assigned to treatment groups.
- Both sample sizes must be greater than or equal to 30 or both populations must be normally distributed.
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Term
| Technical Conditions For The Difference Between Two Means (paired) T-test |
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Definition
The technical conditions are the same for a 1-sample t-procedure but the observational units are pairs and the data used is the differences or the two populations.
- The data must be a simple random sample from both populations of interest.
- Both population sizes must be greater than or equal to 30.
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Term
| Technical Conditions for a X2 GOF Test |
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Definition
- The data must be a simple random sample from the population of interest.
- The expected count of each box must be at least 5.
The degrees of freedom are found by the number of rows -1 multiplied by the number of columns -1.
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Term
| Technical Conditions For The X2 GOF Test Of Independence |
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Definition
- The data are a simple random sample from the population of interest.
- The expected counts are at least 5 in each box.
The degrees of freedom are found by the number of rows -1 multiplied by the number of columns -1.
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