Dependent T test
For $100: What type of t-test is used when the two groups of scores are related or matched in some way?
What is a paired or dependent t-test?
For $100: What statistical test compares the means of two independent groups to see if they are significantly different?
What is an independent t-test?
For $100: What statistical measure shows how spread out numbers are from the mean?
what is standard deviation?
For $100: Why do scientists use different statistical measurements when analyzing data?
What is to better understand different aspects of the data like central tendency and variability?
For $100: What do error bars on a graph visually show about the data?
What is the variability or uncertainty around the mean?
For $200: In a dependent t-test, if one group of subjects is tested twice on the same variable, what does this imply about the data?
What is the data are related or paired?
For $200: In a t-test, what is the term for the hypothesis that assumes no difference between the group means?
What is the null hypothesis?
For $200: When calculating standard deviation, what is the first step with the data points?
What is finding the mean (average)?
For $200: What single value change do you look for?
What is positive or negative changes?
For $200: If error bars are wide, what does that indicate about the data's spread?
What is the data points are more spread out and there is less confidence in the mean?
For $300: In the rat chocolate chip experiment, what was the null hypothesis regarding electrical stimulation?
What is that electrical stimulation has no impact on food intake?
For $300: What value in a t-test tells you how many standard errors the sample mean difference is away from zero?
What is the t-value?
For $300: After finding the mean, what do you calculate for each data point to find the variance?
What is the squared difference from the mean?
For $300: How do you calculate the mean of a data set?
What is the sum of all values divided by the total number of values?
For $300: What statistical term describes the lowest to highest value in a data set?
What is the range?
For $400: If the p-value in a dependent t-test is NOT significant, what decision do you make about the null hypothesis?
What is you accept the null hypothesis?
For $400: If the p-value in a t-test is less than the significance level (e.g., 0.05), what conclusion do you make?
What is you reject the null hypothesis?
For $400: If a group of runners has a low standard deviation in their race times, what does this indicate about their performance?
What is their race times are very similar or consistent?
For $400: What do error bars on a graph represent?
What is the confidence or uncertainty about how well the mean represents the true value?
For $400: What does a high standard deviation tell you about data distribution?
What is the data points are spread out over a large range of values?
For $500: What type of t-test tests whether the mean is significantly greater or less than a value, but not both directions?
What is a one-tailed t-test?
For $500: In the example comparing older and younger adults' life satisfaction, what type of t-test is used?
What is an independent t-test?
For $500: In the example of average height of men, why is standard deviation useful?
What is it shows how much individual heights vary around the average?
For $500: What does a low standard deviation tell you about a data set?
What is that the data points are close to the mean and not widely spread out?
For $500: What is the significance of one standard deviation (1 σ) on either side of the mean?
What is it represents a region with about 64% probability that the true value lies within it?