Math Problem Statement

Match each scatterplot shown below with one of the four specified correlations: -0.29, 0.53, -0.91, 0.97.

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:

  1. 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.

  2. 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.

  3. 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.

  4. 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:

  1. The first scatterplot (from the top) appears to have a weak negative trend, so this should be a. -0.29.
  2. The second scatterplot shows a moderate positive trend, so this should be b. 0.53.
  3. The third scatterplot clearly has a strong negative trend, so this should be c. -0.91.
  4. 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:

  1. What is the difference between positive and negative correlation?
  2. How do you calculate a correlation coefficient?
  3. What is the interpretation of a correlation of 0?
  4. Can two variables have a perfect correlation of 1 or -1 in real-world data?
  5. 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