Exploring Scatterplots

What is the primary purpose of using scatter plots in data analysis?

• To investigate relationships between two sets of data

• To draw lines only

• To calculate exact numerical values

• To create perfectly aligned data points

In the example used, what does the X-axis represent?

• Time of day

• Temperature in degrees Fahrenheit

• Humidity levels

• Number of kids at the bus stop

What variable is plotted on the Y-axis in the discussed scatter plot example?

• Temperature in degrees Celsius

• Number of kids at the bus stop

• Time of day

• Wind speed

Which of the following best describes the correlation observed in the scatter plot example?

• Negative correlation

• No correlation

• Cannot be determined

• Positive correlation

What does a negative correlation indicate about the relationship between two variables?

• As one increases, the other also increases

• As one increases, the other decreases

• No relationship between the variables

• Both variables remain constant

How can the strength of a correlation be described?

• By the color of the data points

• By the number of data points

• By the shape of the data points

• By the distance of points from the line of best fit

What does a strong correlation in a scatter plot look like?

• Points form a circular shape

• Points are all on one line

• Points are closely packed

• Points are widely spread out

Which type of correlation is indicated if the scatter plot data points trend downwards as you move right?

• No correlation

• All of the above

• Positive correlation

• Negative correlation

What can be inferred if a scatter plot shows no clear trend among the data points?

• Data is inconclusive

• Strong positive correlation

• Strong negative correlation

• No correlation

What is the line of best fit used for in scatter plots?

• To summarize the overall trend of the data

• To calculate the area under the curve

• To separate different data clusters

• To measure exact distances between points