Representing data
A numerical fact or calculation that is formed from a sample of data
What is a statistic?
A line that represents, in general, data on a scatterplot.
What is a line of best fit?
All possible outcomes of a situation
What is the sample space?
A type of sample where you collect just the data that's easy to get.
What is convenience sampling?
A bell-shaped curve used for calculating probability.
What is the normal distribution?
When data systematically favors certain outcomes
What is bias?
The difference between what actually occurred and what your model predicted.
What is a residual?
A probability operation represented by an upside-down letter U.
What is the intersection?
In this type of sample I might include every 10th person who leaves the library.
What is a systematic sample?
The mean of a random variable.
What is the expected value?
Differences among and within sets of data, making comparisons difficult
What is variation?
When you make predictions that are far to the right or left of the data.
What is extrapolating?
If the probability of A is equal to the probability of A given B, then A and be are _____
What is independent events?
A sample type where the population is divided into groups, some groups are randomly selected and then all members of the selected groups are studied.
What is a cluster sample?
A rule used for estimating probabilities, it estimates the amount of data within 1 or 2 standard deviations of the mean.
What is the Empirical Rule?
A data distribution where the frequency histogram features tall bars on the left and short bars on the right
What is skewed to the right?
Denoted r, this number tells you how well your line of best fit actually fits your data.
What is the correlation coefficiant?
A model, often computer-based, that uses the probabilities of a real-life situation.
What is a simulation?
A type of sampling that combines different methods when selecting a sample.
What is multistage sampling?
The area under this function is 1, this function has no mode, no peaks, and no clusters.
What is the uniform probability density function?
The rule used for finding outliers from a boxplot
What is the 1.5 IQR rule?
A special type of graph created to analyze the appropriateness of a best-fit model.
What is a residual plot?
The sum of a row or column of a frequency table.
What is a marginal frequency?
The reason that studies are blinded.
What is the placebo effect?
A special type of line graph with percentiles on the y-axis.
What is an ogive?