Here are several scatterplots. The calculated correlations are 0.777, -0.021, 0.951, and - 0.923. Which is which? a) b) d) Match each scatterplot with its calculated correlation. a) b) c)

Jim and Larry run a soup stand. The data below represents the sales of soup that they had on 8 randomly selected days, along with the high temperature on that day.   a) Create a scatter diagram for this data set and comment on whether there is a positive or negative relationship between these variables.b) Calculate the correlation coefficient between temperature and sales.c) Does a linear relationship exist between these variables? Explain to me why or why not this is the case.d) Using excel, calculate the least squares regression equation for this data set. e) Using your equation, predict the soup sales on a day where the temperature is 29 degrees.f) Interpret the slope of this equation.g) Can we use this data set and regression equation to predict the sales on a day when the average temperature is 102 degrees? Why or why not?h) What is the R-squared for this equation? How do you interpret that R-squared?

Short Answer 3: Thirty students were surveyed as to their ethnicity, and the following was the data: Hisp. White Asian Hisp. Afr. White Afr. Hisp. Asian Hisp. Hisp. White White White Hisp. White Afr. Hisp. Hisp. Hisp. Hisp. White Hisp. White Afr. White Afr. Hisp. White Hisp. Graph a bar chart and a pie chart BY HAND, and upload them to this question using the "File Upload" feature!

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.

d). What is the pmf? 3) What is the median, ã ?

Here are several scatterplots. The calculated correlations are -0.977, 0.006, -0.487, and 0.777. Which is which? (a) (b) Match each scatterplot with its calculated correlation. (a) (b) (c) (c) (d) (d) 口ロ口口

Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims. (b) Would you say the correlation is low, moderate, or strong? positive or negative? a) moderate and positiveb) low and negative c) strong and positived) strong and negativee) low and positivef) moderate and negative As x increases, does the value of r imply that y should tend to increase or decrease? Explain. a) Given our value of r, y should tend to decrease as x increases.b) Given our value of r, y should tend to remain constant as x increases. c) Given our value of r, y should tend to increase as x increases.d) Given our value of r, we cannot draw any conclusions for the behavior of y as x increases.

lecture(12.10c):    When we are comparing three or more groups we use the.....................................When we want to uncover a relationship between two assessments ,we use the-----------------------------.and we use the -----------------------to determine if two categories  are related.

Which value of r indicates a stronger correlation: r= 0.761 or r= - 0.908? Explain your reasoning. ... Choose the correct answer below. O A. r= - 0.908 represents a stronger correlation because |- 0.908| > |0.761|. B. r= 0.761 represents a stronger correlation because 0.761 > - 0.908. O C. r= 0.761 represents a stronger correlation because -0.908|> |0.761|. O D. r= - 0.908 represents a stronger correlation because 0.761 > - 0.908.

Match each scatterplot shown below with one of the four specified correlations Please help