EdD Statistics Vocabulary

Effect size is typically calculated as what?

The square of the standard deviation is called ____.

Definition: The quality of distribution that determines how flat or peaked the curve is.

An average expressed as the midpoint in a set of values is the _____.

The difference between the higest and the lowest score in a distribution is the _____.

Definition: Values that organize and describe the characteristics of a collection of data, sometimes called a data set.

This type of hypothesis predicts that there will be a change.

The image below demonstrates what type of kurtosis?

Definition: Scores in a distribution that are noticeably much more extreme than the majority of scores.

A one-tailed test reflects a directional hypothesis.

Definition: A quality of the normal curve where the tails never touch the horizontal axis.

Definition: The best estimate of the range of a population value given the sample value.

When you reject a null hyptohesis that is true, you are committing a ______ .

When you accept a null hypothesis that is false, you are committing a ______ .

Definition: A continuous scale measurement that has equal intervals and a zero scale.

Which quantitative research design is the only one where causation can be inferred and substantiated?

Definition: A measure of whether the data are heavy-tailed or light-tailed relative to a normal distribution.

What are the measures of central tendency?

A subset of a population is called a _______.

For statistics, a collection of data is called a _________.

A record of an observation or event such as a test score, a grade in math class, or response time is called _____.

Definition: How much scores differ from one another or the amount of spread in a set of scores.

An average expressed as the most frequently occuring score is the _____.

What are the different types of scales of measurement?

Definition: The value from a statistical test result that is necessary to reject the null hypothesis.

When scores are distributed symetrically across the mean, median, and mode they form a ______ curve.

A two-tailed test reflects a directional hypothesis.

Definition: A categorical measurement that has logical ranking or levels.

The image below demonstrates what type of skewness?

An average calculated by summing values and dividing that sum by the number of values is the _____.

The image below demonstrates what type of skewness?

The most representative score in a set of scores is the _______.

Definition: Tools that are used to infer characteristics of a population based on data from a sample of that population.

This type of hypothesis says things will be neutral, equal, or stay the same.

Definition: The average amount of variability in a set of scores.

Observing natural occurences without directly interferring to explore relationships between varibales is _____ research.

The middle 50% of a spread of scores is the ______.

Definition: A continuous scale measurement that has equal intervals but no zero.

Definition: A set of tools and techniques used to describe, organize, and interpret information or data.

Definition: An adjusted raw score for standardization.

The measure of the magnitude of difference between two groups is called ______.

The image below demonstrates what type of kurtosis?

Definition: A distribution, caused by outliers, that defines the disproportionate frequency of certain scores

Definition: A categorical measurement that has words and no logical order.

Which is NOT a type of quantitative research?

The quality of distribution when the frequencies of certain scores are disproportionate is called ______.

Comparing already existing groups with researcher intervention to explore differences is _____ research.

Research that involves randomly assigned groups (control and test) and researcher intervention is ______ research.

Which visual would be used to represent frequency distribution?

Comparing already existing groups without intervention by researchers to explore differences is _______ research.