Chi–Squares
What would you expect from residuals in a well-fitting regression model?
When interpreting a correlation coefficient close to -1, what can you conclude about the relationship between two variables?
In experimental design, what term describes what researchers apply or assign to participants to measure its effect?
If a scatterplot of data points shows a linear pattern, which statistical measure would best describe the strength and direction of the relationship between the variables?
In which type of non-probability sampling do participants recruit other participants from among their acquaintances?
If a survey is conducted with a larger sample size, how will the width of the confidence interval for the population mean most likely change?
In a class survey, students were asked if they prefer chocolate or vanilla ice cream; if the responses are independent and equally likely, what's the probability that in two random picks both will prefer vanilla?
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A study wants to investigate whether there is an association between educational attainment (high school, college, graduate) and employment status (employed, unemployed). Which chi-squared test should be used?
Which is a factor required for a two-sample t-test?
Which would be a correct null hypothesis for a chi-square independence test about gender and job experience?