Determine the linear correlation coefficient between commute time and​ well-being score. r = ____ 3 decimal places

Which of the following are attributes of correlation? Ocorrelation is bounded by +1 and -1 correlation is a measure of linear dependency a correlation of 0 does not mean that 2 variables are independent independent variables have 0 correlation

A correlation coefficient measures the strength of the linear relationship between two variables Select one: True False Check The closer the correlation coefficient is to -1 the more spread out the data set is. Select one: True False Check tv

Fill in the blanks. a. Positive correlations between observations of the response variable result in an underestimate of ________. b. Data collected from a designed experiment is generally preferable to data obtained from ________. c. Adata point whose removal has a substantial effect on one or more sample regression coefficients is called an _________.

A correlation value of -0.15 is considered a(n) ______ correlation. a. insignificant b. small c. large d. medium

If all the points in a scatter plot fall precisely on the regression line then the correlation is____ choose one perfect or negative or positive

X           Y                    14         25                    26        28                    19         27                    13         21                    28        31                    23        24                    30        31                    26        27                    19        29 Mean.        22       27 Std. Dev    6.08    3.28 Correlation      0.76 What is the t value using the direct difference approach? (report positive t-value)

IQ tests supposedly measure our intelligence. They typically are ‘normed’ so that they have a mean of 100 and a standard deviation of 15. (Higher scores show higher intelligence.) Use the graph and use the z-score and percents from columns b and c in Table A, when relevant. If you scored 132, what is your z-score? (Interpret.) Use table A  X, z(a), (b), and (c) X z (a) (b) (c)          and use the graph! Write down or save your response to use in Part 2 of this quiz. Group of answer choices -2.53 z. I'm at the 98.34 percentile rank and 1.66% of people scored smarter than me. 2.13 z. I'm at the 98.34 percentile rank and 1.66% of people scored smarter than me. -2.13 z. I'm at the 1.66 percentile rank and 98.34% of people scored smarter than me. 2.53 z. I'm at the 0.57 percentile rank and 99.43% of people scored smarter than me. 2.13 z. I'm at the 1.66 percentile rank and 98.34% of people scored smarter than me. 2.53 z. I'm at the 99.43 percentile rank…