Estimate the most likely degree of correlation for the scatterplot   Options: a. -.99 b. 0 c. .70 d. .30

Joselyn hopes to receive a grade of B or better in her statistics class. Currently she has scored 75, 83, and 81 on her three in-class tests and also has a homework average of 88. Her professor calculates the class grade by finding the mean of five grades: three in-class tests, the homework average and the final exam. What is the minimum score Joselyn must earn on the final exam to have a class grade (mean) of 80? A. 67 B. 95 C. 70 D. 73

Which set of variables has correlation and causation? A. distance traveled and money spent on gas B. distance traveled and money spent on snacks C. distance traveled and number of drinks consumed D. distance traveled and time spent listening to music

Identify the correct statement below: a. The correlation between eye colour and salary is positive b. The correlation between shoe size and eye color is 0.45.  c. The correlation between the weight of a mother and the weight of her daughter is 0.8 d. The correlation between height and weight is 2.5.

Suppose that the correlation between height and IQ in children is +0.70. What proportion (or percent) of the variability in IQ can be explained by the relationship with height?​ Select one: a. 44% b. 51% c. 70% d. 49%

The correlation between midterm and final grades for 300 students is 0.620. If 5 points are added to each midterm grade, the new r will be: a. 0.124 b. 0.57 c. 0.62 d. 0.744

Joan recorded the number of weeks that a patient was prescribed a medication after visiting the doctor. What is the variable in this set of data? a) the name of the doctor b) the type of medication prescribed c) the number of weeks of the prescription d) the name of the patient

In analyzing the the correlation between two variables in the scatter plot, when the variable X increases, the variable Y also increases then the correlation between them is  a. no correlation b. negative c. multiple correlation d. positive

Nik and Nok played 5 games in a bowling center. Their scores are: Nik: 144 171 220 158 147 Nok: 182 165 187 142 159 Who is the better player based on mean score? Who is the more consistent player? Why?

Which value of r indicates a stronger correlation: r= 0.841 or r= - 0.949? Explain your reasoning. Choose the correct answer below. O A. r= 0.841 represents a stronger correlation because -0.949 > 0.841|. B. r= - 0.949 represents a stronger correlation because -0.949|> |0.841|. C. r= - 0.949 represents a stronger correlation because 0.841 > - 0.949. D. r= 0.841 represents a stronger correlation because 0.841 > - 0.949.