M1 U4 Review

Front

A scatter plot of two variables shows a strong upward trend. Which value is most likely for the correlation coefficient?

Back

Front

Back

Strong negative linear relationship

Front

Back

There is a moderate positive linear relationship.

Front

Which of the following statements best describes a causal relationship? Options: Two variables change together, but one does not cause the other. One variable directly affects the other. Both variables are caused by a third variable. The variables are unrelated.

Back

One variable directly affects the other.

Front

Which scenario best illustrates a causal relationship? Options: The number of ice creams sold and the number of people at the beach both increase in summer. Increasing the amount of fertilizer causes plants to grow taller. The number of movies watched and the number of books read in a month. The number of umbrellas sold and the amount of rainfall.

Back

Increasing the amount of fertilizer causes plants to grow taller.

Front

What is a residual in the context of fitting a line to data?

Back

The difference between the observed and predicted value

Front

If a residual is positive, what does this indicate about the observed and predicted values?

Back

The observed value is greater than the predicted value.

Front

Interpret the slope of the line of best fit in the context.

Back

The number of hot chocolate cups sold decreases by 1.91278 with every degree increase.

Front

Interpret the y-intercept for Connie's hot chocolate sales based on the average daily low temperature.

Back

When the temperature is 0 degrees, Connie will sell 176 cups of hot chocolate.

Front

Which of the following lines represents the line of best fit for the scatter plot? A, B, C, D

Back

B