19 terms

# Math Unit 10

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Box plot (box and whisker plot)
a graphical representation showing the five-number summary of data (minimum, lower quartile, median, upper quartile, maximum)
Categorical data
data that represents the attributes of a group of people, events, or objects
Data
information that is collected about people, events, or objects
Dot plot
a graphical representation to organize data that uses dots (or Xs) to show the frequency (number of times) that each number occurs
Histogram
a graphical representation of adjacent bars with different heights or lengths used to represent the frequency of data in certain ranges of continuous and equal intervals
Interquartile range (IQR)
difference between the first quartile and the third quartile of a set of numbers (IQR = Q3 - Q1)
Mean
average of a set of data found by finding the sum of a set of data and dividing the sum by the number of pieces of data in the set
Median
the middle number of a set of data that has been arranged in order from greatest to least or least to greatest
Mode
most frequent piece of data in a set of data
Mode of categorical data (modal category)
most frequent category in a set of data
Mode of numeric data
most frequent value in a set of data
Numerical data
data that represents values or observations that can be measured and placed in ascending or descending order
Percent
a part of a whole expressed in hundredths
Percent bar graph
a graphical representation to organize data that uses solid bars that do not touch each other to show the frequency (number of times) that each category occurs as a percentage as compared to the related part(s) or to the whole
Positive rational numbers
the set of numbers that can be expressed as a fraction , where a and b are counting (natural) numbers
Range
the difference between the greatest number and least number in a set of data
Relative frequency table
a table to organize data that lists categories and the frequency (number of times) that each category occurs as a percentage
Stem-and-leaf plot
a graphical representation used to analyze and compare groups or clusters of numerical data by separating one place value from another place value of a data set. The larger of the two place values is called the stem and the smaller of the two place values is called the leaf.
Variability
measure of the spread of a set of data