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Vocabulary for Data Analysis

bias a statistical sampling or testing error caused by systematically favoring some outcomes over others.
box and whisker plot a diagram that summarizes data using the median, the upper and lower quartiles, and the extreme values.
inference refers to drawing a conclusion from data.
outlier a piece or pieces of data that lie out from the rest of the data (high or low) that can skew (affect) the mean; extreme data that is more than 1.5 more times the inter quartile range from the upper or lower quartiles.
quartile values that divide a set of data into four equal parts.
sample randomly selected group chosen for the purpose of collecting data.
scatter plot compares two sets of data to see relationships.
trend a general direction either upward or downward is called.
trend line in a scatter plot, a line that closely fits the data points.
validity in an experiment, there were no biases or unjust sampling when collecting the data.
Created by: elizabethturner