Scatter Plots and Association

What type of association is represented by a scatter plot with points forming an upward trend?

• A negative association.

• A positive association.

• No association.

• A nonlinear association.

What is the significance of the slope in a scatter plot?

• The slope indicates the direction and rate of change between the two variables; a positive slope indicates a positive association, while a negative slope indicates a negative association.

• The slope represents the average value of the data points in the scatter plot.

• The slope shows the total number of data points in the scatter plot.

• The slope is irrelevant to the relationship between the two variables.

What is a scatter plot?

• A type of graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

• A chart that represents data in a circular format to show proportions.

• A diagram that uses bars to compare different categories of data.

• A line graph that depicts trends over time.

How can you identify outliers in a scatter plot?

• Outliers are data points that fall far away from the general cluster of points and do not fit the overall pattern.

• Outliers are the points that are closest to the line of best fit.

• Outliers are the points that lie within the first and third quartiles of the data.

• Outliers are the points that have the highest frequency in the dataset.

What does a positive association in a scatter plot indicate?

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

• A positive association indicates that as one variable increases, the other variable tends to decrease.

• A positive association indicates that there is no relationship between the variables.

• A positive association indicates that both variables remain constant.

What is the role of the x-axis and y-axis in a scatter plot?

• The x-axis represents the dependent variable, while the y-axis represents the independent variable.

• The x-axis typically represents the independent variable, while the y-axis represents the dependent variable.

• Both axes represent independent variables.

• The x-axis and y-axis have no specific roles in a scatter plot.

How can you determine the strength of an association in a scatter plot?

• By the color of the data points

• By how closely the data points cluster around a line

• By the size of the data points

• By the number of data points in the plot

How can scatter plots be used in real-life applications?

• To create bar graphs for data visualization.

• To analyze relationships between variables in fields like economics, biology, and social sciences.

• To display data in a tabular format for easy comparison.

• To summarize data using mean and median values.

What does a negative association in a scatter plot indicate?

• A positive correlation between two variables.

• As one variable increases, the other variable tends to increase.

• As one variable increases, the other variable tends to decrease.

• No relationship between the two variables.

What type of association is represented by a scatter plot with points forming a downward trend?

• A positive association.

• A negative association.

• No association.

• A strong association.