Measures of Central Tendency
How do you calculate the mean?
Graphs always show how much of the data collected?
All of it
Histograms are used for ______ sets of data.
Larger
The shape of the data can be described three different ways. What are the three ways we describe the shape of the data?
Normally Distributed Symmetrical, Skewed Left, Skewed Right
Q1 (first quartile) is
the median of the data to the left of the Median
How do you calculate the median?
Arrange numbers from smallest to largest, then find the middle number.
Dot plots are typically used for ______ sets of data.
Smaller
Histograms show a ____ of numbers, vs showing every single value.
Range / Interval
If the mean is less than the median, than the shape of the graph will be
what is skewed left
Q3 (third quartile) is
the median of the data on the right side split by the center (median)
the number that appears most often
what is mode
Distribution is ....
What is frequency?
The amount of times something happens / how often something occurs.
when the mean is equal to the median the distribution of the graph is
what is symmetrical / normal / uniform
What percentage (%) of the data is in 1 quartile?
25%
How do you find the median with an even set of data?
Find the Mean(average) of the two middle values.
If the dot plot is skewed left, it means the tail is longer on the...
Left side of the graph
Histograms are better used for data values that cover a wide ____ of observations (data).
Range
Skewed right means the tail is longer on the...
How do you calculate the interquartile range?
Q3 - Q1
Which measure of spread is NOT affected by outliers?
The median.
If there are two peaks in a graph the distribution is
Bimodal
How do you make a histogram in the calculator?
input the data into a list, choose Histogram in stat plot, graph, and use window to change intervals
If the mean is greater than the median, the shape of the graph will be
what is skewed right
What is the 5-number summary?
Minimum, First Quartile, Median, Third Quartile, Maximum