What is a line of best fit?
Keystone Data Review

Flashcard
•
Mathematics
•
8th - 11th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
A line that best represents the data on a scatter plot, showing the trend of the data points.
2.
FLASHCARD QUESTION
Front
How do you calculate the expected value using a linear equation?
Back
Substitute the value of x into the equation y = mx + b to find the corresponding y value.
3.
FLASHCARD QUESTION
Front
What does the first quartile (Q1) represent in a data set?
Back
The first quartile is the median of the lower half of the data set, meaning 25% of the data points are below this value.
4.
FLASHCARD QUESTION
Front
If the first quartile of a data set is 7.5, how many players practiced for at least this amount?
Back
At least 9 out of 12 players practiced for at least 7.5 hours.
5.
FLASHCARD QUESTION
Front
What is the significance of median in a data set?
Back
The median is the middle value that separates the higher half from the lower half of the data set.
6.
FLASHCARD QUESTION
Front
How do you determine the number of students lifting less than a certain weight?
Back
Count the number of data points that fall below the specified weight.
7.
FLASHCARD QUESTION
Front
What is a scatter plot?
Back
A graph that uses dots to represent the values obtained for two different variables, showing the relationship between them.
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