Math Problem Statement
Solution
In this task, you are asked to match each scatterplot to one of the four specified correlation coefficients provided:
- a. -0.29
- b. 0.53
- c. -0.91
- d. 0.97
To solve this, I'll analyze each scatterplot in terms of correlation:
-
Scatterplot with a very strong positive relationship: If the points are closely aligned in a straight line going upwards, this would correspond to the highest positive correlation, which is d. 0.97.
-
Scatterplot with a strong negative relationship: If the points are closely aligned in a straight line going downwards, this would correspond to the strongest negative correlation, which is c. -0.91.
-
Scatterplot with a moderate positive relationship: This scatterplot shows a generally upward trend, but with more spread out points, which corresponds to b. 0.53.
-
Scatterplot with a weak negative relationship: The points show a slight downward trend, but with more spread, corresponding to a. -0.29.
Let me now match these to the scatterplots in your image:
- The first scatterplot (from the top) appears to have a weak negative trend, so this should be a. -0.29.
- The second scatterplot shows a moderate positive trend, so this should be b. 0.53.
- The third scatterplot clearly has a strong negative trend, so this should be c. -0.91.
- The fourth scatterplot has a very strong positive trend, so this should be d. 0.97.
Final Matchings:
- 1st scatterplot → a. -0.29
- 2nd scatterplot → b. 0.53
- 3rd scatterplot → c. -0.91
- 4th scatterplot → d. 0.97
Would you like more details on understanding correlations or scatterplots?
Here are 5 related questions to expand your knowledge:
- What is the difference between positive and negative correlation?
- How do you calculate a correlation coefficient?
- What is the interpretation of a correlation of 0?
- Can two variables have a perfect correlation of 1 or -1 in real-world data?
- What are the assumptions behind using correlation as a measure of association?
Tip: Always visually inspect scatterplots to ensure the correlation coefficient makes sense with the data's trend and spread.
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Math Problem Analysis
Mathematical Concepts
Statistics
Correlation
Scatterplot Analysis
Formulas
Pearson Correlation Coefficient Formula
Theorems
Properties of Correlation Coefficients
Suitable Grade Level
Grades 10-12
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Matching Correlation Coefficients to Scatter Plots: 0.767, 1, -1, -0.767, -0.396