Question

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3) The scatterplot below shows the number of tackles received and the number of concussions received for a team of football players for the most recent season. Choose the statement that best describes the trend, Number of concions Number of Tackles A) Teams that receive a greater number of tackles tend to receive a lower number of concussions. B) There is no association between the number of tackles a team receives and the number of concussions. C) Teams that receive a greater number of tackles tend to have a higher number of concussions 4) The scatterplot below shows the hat size and IQ of some adults. Is the trend positive, negative, or near zero? Hat Size A) Positive B) Near Zero C) Negative 5) A study about high school student SAT scores reported that a student's SAT Math score has a strong positive linear association with his/her SAT Verbal score. What can you determine about the relationship between SAT Math scores and SAT Verbal scores? A) No conclusions can be drawn without seeing a scatterplot of the data. B) If a student's SAT Math score decreases, his SAT Verbal score will also decrease C) Students who like Math also like Verbal. D) Students with higher SAT Math scores tend to have higher SAT Verbal scores. 6) Which of the following statements regarding the correlation coefficient is false? A) A correlation coefficient of -1 means that as one variable increases, the other decreases. B) The correlation coefficient is a value between-1 and 1. C) A correlation coefficient of 1 means that two variables are perfectly linearly related. D) A high correlation coefficient tells us the data are linear.

Answer 1

3.

From the Scatterplot we say that there is a positive association and linear trend between number of tackles and number of concussions.

Hence the option is ( C )

i.e., Teams that receive greater number of tackles tend to have a higher number of concussions.

4.

From the given scatterplot

The association between IQ and size has no correlation or uncorrelation or zero correlation.

Hence the option is ( B )

i.e., The trend is near to zero.

5.

From the given information we say that there is strong positive linear association between scores it means if one score increases the other score is also increases.

Hence the option is ( D )

i.e., Students with higher SAT Math scores tend to have higher SAT verbal scores.

6.

The statement the higher correlation coefficient tell us the data are linear is false.

Hence the option is ( D )