STAT 1000 EXAM QUESTIONS AND 100%
CORRECT ANSWERS!!
Categorical data
non-numeric data
examples of categorical data
eye color, address, favorite color, favorite Avenger
ways to display categorical data
pie chart, bar graph - anything that displays frequency or relative frequency
relative frequency
percentages! %
Quantitative data
any piece of data involving a number for each individual input
ways to display quantitative data (graphical)
histogram, stem plot, box plot
ways to display quantitative data (numeric)
mean, median, quartiles, range, interquartile range, variants, standard deviation
how do you read a stem and leaf plot?
-the stem is the ten's digit
-the leaves are the records of individual pieces of data as the one digits that go with their tens
digit
-the leaves to the left represent a separate data set to the leaves on the right.
A stem and leaf plot tells you...
frequency, outliers, spread, shape
, skew
shape of data that results when one end of the data has a longer tail than the other
spread
refers to the range of a data sets values, usually the interquartile range
numerical summary measure
quantities which describe the spread and center of a data set
mean
aka average
1/n * Σ(Xi)
n is sample size, Xi is individual data points
median
average of middle values
Out of mean and median, the _______ is more resistant to skew observations.
median
Quartiles
median of smaller sections of data set
Quartiles: Usually the sets are split by the overall ________, with the ____ representing the
median of the lower half of the data, and the ____ representing the median of the upper
half of the data.
median, Q1, Q3
Interquartile Range
Q3 - Q1
The interquartile range encompasses the _______ ______ of the data.
middle 50%
CORRECT ANSWERS!!
Categorical data
non-numeric data
examples of categorical data
eye color, address, favorite color, favorite Avenger
ways to display categorical data
pie chart, bar graph - anything that displays frequency or relative frequency
relative frequency
percentages! %
Quantitative data
any piece of data involving a number for each individual input
ways to display quantitative data (graphical)
histogram, stem plot, box plot
ways to display quantitative data (numeric)
mean, median, quartiles, range, interquartile range, variants, standard deviation
how do you read a stem and leaf plot?
-the stem is the ten's digit
-the leaves are the records of individual pieces of data as the one digits that go with their tens
digit
-the leaves to the left represent a separate data set to the leaves on the right.
A stem and leaf plot tells you...
frequency, outliers, spread, shape
, skew
shape of data that results when one end of the data has a longer tail than the other
spread
refers to the range of a data sets values, usually the interquartile range
numerical summary measure
quantities which describe the spread and center of a data set
mean
aka average
1/n * Σ(Xi)
n is sample size, Xi is individual data points
median
average of middle values
Out of mean and median, the _______ is more resistant to skew observations.
median
Quartiles
median of smaller sections of data set
Quartiles: Usually the sets are split by the overall ________, with the ____ representing the
median of the lower half of the data, and the ____ representing the median of the upper
half of the data.
median, Q1, Q3
Interquartile Range
Q3 - Q1
The interquartile range encompasses the _______ ______ of the data.
middle 50%
