Math Problem Statement

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

Solution

To match each scatterplot with the correct correlation coefficient, let's analyze the general pattern of each scatterplot and the possible values for the correlation:

The given correlations are:

  • a. -0.29
  • b. 0.53
  • c. -0.91
  • d. 0.97

Analysis of Scatterplots:

  1. First Scatterplot (Top)

    • The data points seem to have a strong positive linear relationship. The points are closely clustered around an upward slope. This indicates a correlation close to +1.
    • Match: d. 0.97
  2. Second Scatterplot (Second from Top)

    • The points are loosely scattered with no strong pattern, but there is a slight downward trend. This suggests a weak negative correlation.
    • Match: a. -0.29
  3. Third Scatterplot (Second from Bottom)

    • The points are strongly clustered around a negative linear trend, indicating a high negative correlation.
    • Match: c. -0.91
  4. Fourth Scatterplot (Bottom)

    • The points display a moderate positive linear relationship, but they are more spread out compared to the first scatterplot. This indicates a moderate positive correlation.
    • Match: b. 0.53

Conclusion:

  • First scatterplot: d. 0.97
  • Second scatterplot: a. -0.29
  • Third scatterplot: c. -0.91
  • Fourth scatterplot: b. 0.53

Would you like further details or have any questions?

Related Questions:

  1. What is the meaning of correlation coefficient values between -1 and 1?
  2. How can you visually determine if a correlation is positive or negative?
  3. What are some common real-life examples of positive and negative correlations?
  4. What does a correlation coefficient close to 0 signify?
  5. How do outliers affect the correlation of a dataset?

Tip:

Correlation does not imply causation. Even if two variables show a strong correlation, it doesn't mean that one causes the other to change.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Correlation
Scatterplot Analysis
Statistical Data Representation

Formulas

Correlation coefficient formula r = (Σ(xy) - (Σx)(Σy)/n) / sqrt([(Σx^2) - (Σx)^2/n][(Σy^2) - (Σy)^2/n])

Theorems

Pearson's Correlation Coefficient

Suitable Grade Level

Grades 10-12