Exam 2: Describing Data

Use the following to answer the questions below: One of the symptoms of the flu is an elevated pulse rate. Pulse rates (in beats per minute) for patients with the flu are provided. -Give the sample mean pulse rate. Use two decimal places in your answer.

Use the statement to answer the following questions below. -A Fun-Size bag of M&M's contains 5 green, 3 red, 3 yellow, 3 orange, 4 blue, and 3 brown candies. 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. -If the forearm and foot lengths had been measured in inches instead of centimeters the correlation would be different.

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. -Using your model to predict the foot length for an individual with a forearm length of 45 cm would be ________.

Use the following to answer the questions below: A biologist collected data on a sample of 20 porcupines. She wants to be able to predict the body mass of a porcupine (in grams) based on the length of the porcupine (in cm). Her least squares regression equation is where M is the mass. -If it would make sense, provide a clear interpretation of the intercept of the regression line, in context. Otherwise, explain why the interpretation does not make sense.

Use the following to answer the questions below: The provided histogram displays the number of Facebook friends for students in a small statistics class. -The mean number of Facebook friends is closest to which value?

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." -Display the results in a frequency table.

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. -Discuss the information contained in the scatterplot. What does it mean about GPA and number of Facebook friends?

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 15th percentile of the distribution of financial aid amounts.

Use the following to answer the questions below: One of the symptoms of the flu is an elevated pulse rate. Pulse rates (in beats per minute) for patients with the flu are provided. -Give the five-number summary of these pulse rates.

Use the following to answer the questions below: The midrange is another way to measure of the center of a distribution. The midrange of a dataset is defined to be the average of the minimum and maximum values in the dataset. -In general, would you think that the midrange should be a resistant statistic?

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." -Give a relative frequency table of the data. Use two decimal places in your relative frequencies.

Use the following to answer the questions below: Identify which graphical display might be appropriate in each case. Select all that apply. -Compare the number of points scored for all games played in a season for all football teams in the Big 10 conference.

Use the following to answer the questions below: In a recent survey, Gallup asked a sample of U.S. adults if they would prefer to have a job outside the home, or if they would prefer to stay home to care for the family and home. Partial results for the individuals who expressed a preference, broken down by gender, are displayed in the two-way table. -Compute the difference in the proportion of men who would prefer a job outside of the home and the proportion of females who would prefer a job outside of the home. Use two decimal places in your answer.

Use the dataset to compute the following summary statistics in the questions below. - Median

Use the following to answer the questions below: The side-by-side boxplots compare the top 100 men's and women's finishing times in a marathon. -Which group has the larger spread in its race times?

Use the dataset to compute the following summary statistics in the questions below. - IQR

The survey results are displayed in the segmented bar chart. Does there appear to be an association between education level and belief in the theory of evolution? If so, what does it mean about these two variables? ‪

There are no testbank questions for this section.

Use the following to answer the questions below: Identify which graphical display might be appropriate in each case. Select all that apply. -Investigate the relationship between the length of the right foot (in cm) and the length of the right forearm (in cm) for students in your class.