1 Sample Confidence Interval
This is how you find degrees of freedom for a t-distribution
What is sample size-1 (n-1)?
This value represents the probability of observing your results, or more extreme, if the null hypothesis is true.
What is the p-value?
A 2-sample t-test compares these two statistics from independent samples.
What are the sample means?
This type of chi-square test determines if two categorical variables are associated.
What is a chi-square test of independence?
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Who is Taylor Swift?
This statistic is at the center of every confidence interval for a population mean.
What is the sample mean?
A 1-sample t-test is used when testing a claim about this population parameter.
What is the population mean?
This condition must be met for each sample: the sample sizes must be large or the populations approximately normal.
What is the normality condition (or Central Limit Theorem)?
The expected counts in a chi-square test are calculated assuming this hypothesis is true.
What is the null hypothesis?
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Who is Captain America?
A 95% confidence interval for a population mean is wider than this confidence interval.
What is a 90% confidence interval?
When your p-value is less than alpha, you make this decision.
What is reject the null hypothesis?
The null hypothesis in a 2-sample test for means usually assumes this difference.
What is zero?
In a goodness-of-fit test, this is the minimum expected count per category.
What is 5?
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What is Stranger Things?
This component of a confidence interval formula decreases when sample size increases.
What is the standard error?
This is the name of the hypothesis that represents “no effect” or “no difference.”
What is the null hypothesis?
This applet allows you to find a 2 sample confidence interval or t test for the mean.
What is 1 Quantitative Variable Multiple Group?
This is the applet you use for a chi square for goodness of fit test
What is 1 Categorical Variable Single Group
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Who is Joaquin Phoenix?
This assumption must be met to construct a valid t-interval: either the population is normal or the sample size is large.
What is the normality condition/Central Limit Theorem?
The test statistic in a t-test is calculated as this ratio.
What is (sample mean – hypothesized mean) divided by standard error?
In a 2-sample t-test, we assume samples are independent and drawn from populations with these characteristics.
What are random and approximately normal distributions or sample size over 30?
The degrees of freedom for a chi-square test of independence are calculated using this formula.
What is (number of rows – 1) × (number of columns – 1)?
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Who is BTS?