Exam 6: The Beast of Bias

A researcher investigating 'Pygmalion in the classroom' measured teachers' perceptions of male and female students' mathematical abilities.She collected teacher ratings of 97 male and female students.Based on the output,what can you say about the data?

Which of these variables would be considered not to have met the assumptions of parametric tests based on the normal distribution?

Which of the following symbols does not represent a population parameter?

The assumption of homogeneity of variance is met when:

What does the assumption of independence mean?

Levene's test can be used to measure:

In a small data sample (N = 20),what can we say about a z-score of 2.37?

What does the graph below indicate about the normality of our data?

A standard score is:

Looking at the table below,which of the following statements is correct?

Which of the following transformations is most useful for correcting skewed data?

Should you use significance tests of skew and kurtosis in large samples?

A researcher investigating 'Pygmalion in the classroom' measured teachers' perceptions of male and female students' mathematical abilities.She wanted to test whether teachers perceived males as being better at maths by comparing teachers' mean ratings of 97 male and female students.Based on the output,what action should the researcher take before testing whether the mean teacher perceptions are different for male and female students?

When we talk about the assumption of normality,what do we mean?

The central limit theorem tells us:

The test statistics we use to assess a linear model are usually _______ based on the normal distribution.

To get a sample of a certain size,scores are taken one-by-one from the observed data and each time replaced.The parameter of interest (e.g.,the mean or b in regression)is computed within the sample.This process is repeated numerous times.The resulting parameter estimates are used to compute a confidence interval.The process I am describing is:

We predict an outcome variable from some kind of model.That model is described by one or more _______ variables and ________ that tell us something about the relationship between the predictor and outcome variable.

What is the Shapiro-Wilk test primarily used for?

Is it possible to calculate the skewness of a set of numerical scores?