Explain the difference between measures of center and measures of variation.
Measures of center (mean, median) tell where the data tends to cluster. Measures of variation (range, interquartile range, mean absolute deviation) tell how sp
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25
Explain how the center of a distribution can help summarize the data.
The center gives us a single value that represents a typical or average value in the data set.
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10
What does it mean for data to have a distribution?
It means the data are spread out in a certain way across possible values. The distribution shows how often each value or range of values occurs.
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10
Create a simple dot plot using the following data: 2, 3, 4, 4, 5.
Teacher will decide
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5
How do you find the mean of a data set?
Add all the values together and divide by the number of values.
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20
What is the mean absolute deviation?
The mean absolute deviation (MAD) is the average distance between each data point and the mean of the data set. It measures variability.
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trap
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magnet
Take 20 points!
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gift
Win 15 points!
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lifesaver
Give 15 points!
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seesaw
Swap points!
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seesaw
Swap points!
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shark
Other team loses 15 points!
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baam
Lose 5 points!
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Lose 50 points!
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shark
Other team loses 25 points!
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shark
Other team loses 25 points!
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lifesaver
Give 5 points!
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15
What information can you get from a box plot?
A box plot shows the minimum, lower quartile, median, upper quartile, and maximum. It helps visualize spread and symmetry of the data.
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5
What are the three key aspects of a data distribution?
Center (where the middle of the data lies) Range (how spread out the data is) Shape (the overall pattern of the data)
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5
What is a measure of center?
A number that represents the middle or typical value of a data set, such as the mean or median.
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25
Create a statistical question about the ages of your classmates.
"What are the ages of students in my class?"
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15
Why is "How many pets do students have?" a statistical question?
Because different students may have different numbers of pets, so the answers will vary. This variability is what makes the question statistical.
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5
What is a dot plot?
A simple graph where each data value is shown as a dot above a number line.
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5
How do you create a histogram?
Group data into intervals (called bins), count how many data points fall into each bin, and draw bars to show those frequencies.