8th Scatterplots & Line of BEST fit

8th Scatterplots & Line of BEST fit

Assessment

Flashcard

Mathematics

8th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

2.

FLASHCARD QUESTION

Front

What does the line of best fit represent in a scatter plot?

Back

The line of best fit represents the trend in the data, showing the general direction that the data points follow.

3.

FLASHCARD QUESTION

Front

How do you determine the slope of a line from a scatter plot?

Back

The slope of a line can be determined by selecting two points on the line and using the formula: slope = (change in y) / (change in x).

4.

FLASHCARD QUESTION

Front

What does a positive correlation in a scatter plot indicate?

Back

A positive correlation indicates that as one variable increases, the other variable also tends to increase.

5.

FLASHCARD QUESTION

Front

What does a negative correlation in a scatter plot indicate?

Back

A negative correlation indicates that as one variable increases, the other variable tends to decrease.

6.

FLASHCARD QUESTION

Front

How can you predict a value using a trend line in a scatter plot?

Back

To predict a value, locate the desired x-value on the horizontal axis, then find the corresponding y-value on the trend line.

7.

FLASHCARD QUESTION

Front

What is the formula for calculating the slope from a table of values?

Back

The slope can be calculated using the formula: slope = (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are two points on the line.

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