Exam 2: Describing Data

Use the following to answer the questions below: The scatterplot shows the relationship between GPA and the number of Facebook friends for 30 students in a class. -For each corner of the scatterplot (top left, top right, bottom left, bottom right), describe a student whose responses place him or her in that corner.

Use the following to answer the questions below: Students in a small statistics course collected data to determine if the length of the forearm could be used to predict the length of the foot (both measured in centimeters). Their data are displayed in the provided table. -A scatterplot of the data with the least squares regression line is shown. What are the coordinates of the point with the most extreme negative residual?

Use the following to answer the questions below: The provided Minitab output displays descriptive statistics for the amount of financial aid, in thousands of dollars, awarded to a sample of students at a large university. -Is the largest financial aid amount an outlier?

Use the following to answer the questions below: The provided Minitab output displays descriptive statistics for the amount of financial aid, in thousands of dollars, awarded to a sample of students at a large university. -Based on the output, give an interval that is certain to contain the 60th percentile of the distribution of financial aid amounts.

Use the following to answer the questions below: February 12, 2009 marked the 200 ^th anniversary of Charles Darwin's birth. To celebrate, Gallup, a national polling organization, surveyed 1,018 Americans about their education level and their beliefs about the theory of evolution. The survey results are displayed in the provided two-way table. ‪ -Find the proportion of respondents who believe in evolution for each education level (round each to three decimal places). Does there seem to be an association between education level and belief in evolution? If so, in what direction?

Use the following to answer the questions below: In a survey conducted by the Gallup organization September 6-9, 2012, 1,017 adults were asked, "In general, how much trust and confidence do you have in the mass media-such as newspapers, TV, and radio-when it comes to reporting the news fully, accurately, and fairly?" 81 said that they had a "great deal" of confidence, 325 said they had a "fair amount" of confidence, 397 said they had "not very much" confidence, and 214 said they had "no confidence at all." -In the same article, they compare opinions about the media in 2012 to those in the previous election year (2008). In 2008, 60% of Democrats, 27% of Republicans, and 41% of Independents had positive opinions (great deal/fair amount of confidence) about the media. For each political party, find the difference in the proportion of positive opinions in 2008 and the proportion of positive opinions in 2012. Comment on if/how opinions have changed for the political parties over the past four years.

Use the following to answer the questions below: Trying to determine the number of students to accept is a tricky task for universities. The Admissions staff at a small private college wants to use data from the past few years to predict the number of students enrolling in the university from those who are accepted by the university. The data are provided in the following table. -Find the least squares regression line for predicting the number enrolled from the number accepted.

Use the following to answer the questions below: The provided Minitab output displays descriptive statistics for the amount of financial aid, in thousands of dollars, awarded to a sample of students at a large university. -How many students are included in the sample?

Use the following to answer the questions below: February 12, 2009 marked the 200 ^th anniversary of Charles Darwin's birth. To celebrate, Gallup, a national polling organization, surveyed 1,018 Americans about their education level and their beliefs about the theory of evolution. The survey results are displayed in the provided two-way table. ‪ -What proportion of respondents have a college degree? Round your answer to three decimal places.

Use the following to answer the questions below: Scores on an exam (out of 100 points) given in a large introductory statistics course are displayed in the provided histogram. -Based on the histogram, which value is likely the mean exam score?

Use the following to answer the questions below: The states located in the Midwestern region of the country typically experience a large number of tornados every year. The number of tornadoes from 2000-2011 for four Midwestern states (Kansas, Nebraska, South Dakota, and Iowa) are displayed in the side-by-side boxplots. -Which state has the largest range?

Use the following to answer the questions below: Trying to determine the number of students to accept is a tricky task for universities. The Admissions staff at a small private college wants to use data from the past few years to predict the number of students enrolling in the university from those who are accepted by the university. The data are provided in the following table. -Interpret the slope in of the least squares regression line in context.

Use the following to answer the questions below: Students in an introductory statistics course were asked to count the number of scars on their dominant hand (the one they write with the most). The results are displayed in the provided boxplot. -Which answer best describes the following conclusion? "There are no students with 7 scars on their dominant hand."

Use the following to answer the questions below: Match the five-number summary to the appropriate boxplot. - 5, 8, 9, 11, 14

Use the following to answer the questions below: The least squares regression line is displayed on the provided scatterplot. Note that the points are displayed with numbers (each point having its own number), rather than points. -Which point has the most extreme negative residual?

Use the following to answer the questions below: Students in an introductory statistics course were asked to count the number of scars on their dominant hand (the one they write with the most). The results are displayed in the provided boxplot. -From the boxplot you can identify how many students are in the class.

Use the following to answer the questions below: Students in a small statistics course collected data to determine if the length of the forearm could be used to predict the length of the foot (both measured in centimeters). Their data are displayed in the provided table. -Which of the following would you expect to be true about the association between the length of the forearm and the length of the foot?

Use the following to answer the questions below: In a survey conducted by the Gallup organization September 6-9, 2012, 1,017 adults were asked, "In general, how much trust and confidence do you have in the mass media-such as newspapers, TV, and radio-when it comes to reporting the news fully, accurately, and fairly?" 81 said that they had a "great deal" of confidence, 325 said they had a "fair amount" of confidence, 397 said they had "not very much" confidence, and 214 said they had "no confidence at all." -Sketch a bar chart of the data.

Use the following to answer the questions below: Students in a small statistics course collected data to determine if the length of the forearm could be used to predict the length of the foot (both measured in centimeters). Their data are displayed in the provided table. -Find the correlation between forearm and foot length. Use three decimal places in your answer.

Use the following to answer the questions below: Students in an introductory statistics course were asked to count the number of scars on their dominant hand (the one they write with the most). The results are displayed in the provided boxplot. -The distribution of the number of scars would be classified as