QR PASS Week 4

What are the elements needed for a scatter plot?

• Title

• Legend

• Axis Labels

• Units

What does a positive trend in a scatter plot indicate?

• As one variable increases, the other decreases

• There is no relationship between the variables

• As one variable increases, the other increases

• The variables are unrelated

What does a negative trend in a scatter plot indicate?

• As one variable increases, the other decreases

• As one variable increases, the other decreases

• The variables are unrelated

• There is no clear pattern

If a scatter plot shows no clear pattern, what does this mean?

• The variables have a strong relationship

• There is no correlation between the variables

• The variables always change together

• One variable causes the other to change

What is an outlier in a scatter plot?

• A data point that fits perfectly with the trend

• A data point that is far from the rest of the data

• A point that represents the mean value

• A point that is always at (0,0)

Which type of trend would you expect in a scatter plot of "time spent exercising" vs. "calories burned"?

• Positive correlation

• Negative correlation

• No correlation

• Exponential decay

What does a strong correlation mean?

• One variable causes the other

• The scatter plot has no pattern

• The points are widely spread apart

• The points are tightly clustered around a trend line

Which of these scatter plots would likely show a negative trend?

• Temperature vs. Ice Cream Sales

• Study Time vs. Exam Score

• Number of Absences vs. Final Grade

• Years of Education vs. Salary

What is the purpose of a trendline in a scatter

• To connect all data points

• To highlight outliers

• To show the overall pattern or trend

• To replace missing data

Which scatter plot scenario would likely show no correlation?

• Height vs. Shoe Size

• Age vs. Number of Siblings

• Hours of Exercise vs. Calories Burned

• Temperature vs. Energy Consumption