Psychological Statistics : Lesson 2

Digital flashcard reviewer for lesson 2 : Visualizing Relations

Scatterplot

supporting details: Scatterplots, being a visual representation of correlations between variables, play a crucial role in data analysis. These graphs, structured on a coordinate plane, offer a comprehensive view of the relationship between two numerical variables. By plotting data points, scatterplots present a visual roadmap for viewers to identify patterns, trends, and connections between the variables under investigation. Analyzing the distribution and clustering of these points provides researchers with valuable insights into the strength and direction of the correlation. This process enables a deeper understanding of how the variables interact, helping researchers draw informed conclusions and make data-driven decisions. Thus, scatterplots serve as powerful tools in illuminating complex data relationships and facilitating meaningful interpretations.

Correlations are visualized by?

Correlations between variables are visually represented through _________, which are graphs that display the relationship between two numerical variables by plotting points on a coordinate plane. These allow viewers to easily see patterns, trends, or relationships between the variables being studied. By examining the distribution and clustering of the points on it, researchers can gain valuable insights into the strength and direction of the correlation between the variables.

True

supporting details: In a scatter plot, each individual's score on both the X and Y variables is visually represented by a point or marker. The X variable is depicted on the horizontal axis, while the Y variable is displayed on the vertical axis. This graphical representation provides a clear visual understanding of the relationship between the two variables for each data point in the plot.

True o False?

A single person's score on both the X and Y variables is represented by each point or marker in the plot, which is shown on the x- and y-axes, respectively.

False

answer: Scatterplot

supporting details: The statement is false because correlations are not themselves visualizations. Correlations are statistical measures that quantify the strength and direction of the relationship between two variables. A scatterplot, on the other hand, a commonly used data visualization technique. It displays the correlation and patterns between multiple variables in a visually appealing manner, making it easier to identify trends and associations within the data.

True o False?

Correlations is a type of visualization that shows the relationship between different variables.

x

On the y-axis, the values of the ______ variable are shown.

False

answer: x- and y-axis; In a scatterplot, data points are systematically plotted along both the x-axis and y-axis, creating a visual representation that helps analyze relationships and patterns within the dataset.

True o False?

Data points are arranged between the y- and y-axis to display a scatterplot.

Positive Correlation

supporting details: In positive correlation, two variables exhibit a pattern where as one variable goes up, the other also goes up, and when one variable goes down, the other follows suit in the same direction. This type of relationship signifies a direct and proportional connection between the variables.

A type of relationship where one variable increases/decreases the other also increases/decreases.

Negative Correlation

supporting details: When examining the relationship between two variables, a negative correlation is observed when one variable rises in value while the other variable decreases in value, indicating an inverse relationship between the two. This type of correlation is commonly found in research studies and statistical analyses.

Another type of correlation where one variable increases, the other decreases.

False

answer: Positive Correlation

True or False?

In Negative Correlation, as the scores on the X variable increases/ decreases, scores on the Y variable also tend to increase/decrease.

True

In Positive Correlation, the scores on the Y variable tend to increase/decrease when the scores on the X variable increases/decreases.

Positive Correlation and Negative Correlation

State the two main types of correlation