Strength of Correlation — Quiz

Question 1

Which r – value represents the strongest negative correlation?

Revolt · Accepted Answer

negative 0 point 7

Question 2

Which r -value represents the most moderate correlation?

Revolt · Accepted Answer

0 point 5 6

Question 3

Which r -value represents the weakest correlation?

Revolt · Accepted Answer

0 point 1 1

Question 4

The number of grams of zero-calorie sodium in a restaurant meal is compared to the total number of calories in the meal. The correlation coefficient relating the two variables is 0 point 7 4 Which best describes the strength of the correlation, and what is true about the causation between sodium and the number of calories in this meal?

Revolt · Accepted Answer

It is a strong positive correlation, and it is not likely causal.

Question 5

Which graph shows data whose r -value is most likely closest to 0 ?

Revolt · Accepted Answer

Image with description A graph shows both axes unnumbered. Points are scattered all over the graph.

Question 6

Which best describes the strength of a model with an r -value of 0 point 2 9 ?

Revolt · Accepted Answer

a weak positive correlation

Question 7

Which relationships would most likely be causal? Choose two correct answers.

Revolt · Accepted Answer

a negative correlation between the temperature and the amount of snow still on the ground; a positive correlation between the height of a woman and the height of her brother

Question 8

Which r -value represents the strongest correlation?

Revolt · Accepted Answer

0 point 7 9

Question 9

The number of times a player has golfed in one’s lifetime is compared to the number of strokes it takes the player to complete 18 holes. The correlation coefficient relating the two variables is negative 0 point 2 6 Which best describes the strength of the correlation, and what is true about the causation between the variables?

Revolt · Accepted Answer

It is a weak negative correlation, and it is not likely causal.

Question 10

Which relationships would most likely be causal? Choose two correct answers.

Revolt · Accepted Answer

a positive correlation between the temperature in a canyon in the early spring and the number of snakes seen by hikers; a negative correlation between the time a glass of ice water sits on the counter and its temperature

Strength of Correlation — Quiz Answers

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