Scatter plots and Association

How can scatter plots be used in real life?

• To create bar graphs for data representation.

• To analyze relationships and make predictions in various fields such as science, business, and social studies.

• To display data in a circular format for better visualization.

• To summarize data in a single value for quick reference.

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What does it mean if a scatter plot has a wide spread of points?

• A strong correlation between the two variables.

• A weak correlation between the two variables.

• No correlation between the two variables.

• A perfect correlation between the two variables.

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How can you identify a positive correlation in a scatter plot?

• A positive correlation can be identified by a pattern where the data points slope upwards from left to right.

• A positive correlation is indicated by a random distribution of points.

• A positive correlation shows that as one variable increases, the other variable decreases.

• A positive correlation can be identified by a pattern where the data points slope downwards from left to right.

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What is the significance of outliers in a scatter plot?

• Outliers are irrelevant and can be ignored in analysis.

• Outliers are data points that differ significantly from other observations; they can affect the correlation and interpretation of the data.

• Outliers indicate a mistake in data collection and should be removed.

• Outliers are always the highest values in the dataset.

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What is the first step in analyzing a scatter plot?

• To observe the overall pattern of the data points to determine the type of correlation.

• To calculate the mean of the data points.

• To identify outliers in the data set.

• To create a linear regression model.

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What is a scatter plot?

• A type of bar graph that displays categorical data.

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

• A line graph that represents data over time.

• A pie chart that shows the proportions of a whole.

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What does a positive correlation indicate in a scatter plot?

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

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

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

• A positive correlation indicates that both variables are constant.

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What does a negative correlation indicate in a scatter plot?

• A negative correlation indicates that as one variable increases, the other variable tends to decrease.

• A negative correlation indicates that both variables increase together.

• A negative correlation indicates that there is no relationship between the variables.

• A negative correlation indicates that as one variable decreases, the other variable tends to increase.

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What does no correlation mean in a scatter plot?

• There is a strong relationship between the two variables.

• The data points show a clear upward trend.

• There is no predictable relationship between the two variables; the data points do not show any pattern.

• The data points are clustered tightly around a line.

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What is an example of a negative correlation?

• The relationship between the amount of exercise and body weight; as exercise increases, body weight tends to decrease.

• The relationship between the amount of sleep and productivity; as sleep increases, productivity tends to decrease.

• The relationship between temperature and ice cream sales; as temperature increases, ice cream sales tend to increase.

• The relationship between study time and test scores; as study time increases, test scores tend to decrease.

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