Identify the level of measurement of the data, and explain what is wrong with the given calculation.In a set of data, movie ratings are represented as 1 for 1 star, 2 for 2 stars, and 3 for 3 stars. The average (mean) of the 618 movie ratings is 1.3.The data are at thelevel of measurement.What is wrong with the given calculation?A. The true average (mean) is 2.5.B. One must use a different method to compute the average (mean) of such data.C. Such data should not be used for calculations such as an average (mean).D. There is nothing wrong with the given calculation.

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Answered: Identify the level of measurement of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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What is the difference between relative frequency and cumulative frequency? Choose the correct answer below. A. Relative frequency of a class is the number of observations in that class, while cumulative frequency of a class is the sum of all the frequencies. B. Relative frequency of a class is the proportion of the data in that class, while cumulative frequency of a class is the number of observations in that class. C. Relative frequency of a class is the percentage of the data that falls in that class, while cumulative frequency of a class is the sum of the frequencies of that class and all previous classes. O D. There is no difference between the two.
Tia helps run her school's concession stand during football games. Over the course of the season, she tracks how many hamburgers and hotdogs are sold at each game and records the data in the table below. Hamburgers Hotdogs Sold Sold 30 8 28 25 29 25 18 13 22 23 20 Based on the data, which statement is true? O The mean number of hamburgers sold is less than the number of mean hotdogs sold. O The mean number of hamburgers sold is greater the mean number of hotdogs sold. O The median number of hamburgers sold is less than the median number of hotdogs sold. O The median number of hamburgers sold is greater the median number of hotdogs sold.
The mean scores for students in a statistics course (by major) are shown below. What is the mean score for the class? 9 engineering majors: 91 5 math majors: 95 13 business majors: 77 The class's mean score is (Type an integer or a decimal rounded to two decimal places as needed.) nts
Answer the questions below. (a) The 9 members of the swim team completed the following numbers of laps at today's practice: 76, 80, 81, 82, 86, 88, 89, 91, 158. Which measure should be used to summarize the data? Mean Mode (b) Greg wants to determine which letter appears the most often in his favorite poem. Which measure should he use? Median Mean Median Mode (c) The 10 members of the dance team each bought new shoes. Here are the prices they paid: $51, $52, $53, $55, $58, $59, $62, $63, $64, $65. Which measure should be used to summarize the data? Mean O Median Mode
Select the correct statement about the mean and median for the histogram below. 150 50 LO 5 15 The mean is likely to be larger than the median. The mean is likely to be smaller than the median. The mean and the median are likely to be approximately equal. 25
For each of the states and Puerto Rico, the histogram below shows the average property damage (in millions of dollars) caused by tornadoes over a 50 year period. Which of the following statements is TRUE with regards to the relationship between the mean and the median? Average Tornado Damage for the 50 States and Puerto Rico (1950-1999) Average property damage (Smallions) O The median is greater than the mean. The median is less than the mean. O There is no way of knowing what kind of relationship the mean and median have. O The median is equal to the mean.
A data set has five values. The largest value is 31. The median is 21. The mode is 16. The mean is 21.2. The data, in order from least to greatest is:
For the data described below, identify the level of measurement as nominal, ordinal, interval, or ratio. Final course grades of A, B, C, D, or F Choose the correct answer below. ratio nominal ordinal O interval
A student earned grades of 74, 75, 79, and 91 on her four regular tests. She earned a grade of 75 on the final exam and 84 on her class projects. Her combined homework grade was 86. The four regular tests count for 40% of the final grade, the final exam counts for 30%, the project counts for 10%, and homework counts for 20%. What is her weighted mean grade? 80.0 80.6 80.5 81.1
Refer to the data set of birth weights (grams) of the 44 babies given in the accompanying table and use software or a calculator to find the mean and median. Examine the list of birth weights to make an observation about those numbers. How does that observation affect the way that the results should be rounded? EE Click the icon for the birth weight data. ........ Birth weights (grams) The mean of the data set is grams. (Round to one decimal place as needed.) 2900 3600 4200 3200 3400 3500 3100 3200 1000 3200 3500 300 3200 3300 3300 3600 3000 3900 2000 3000 3500 2400 4300 1900 4000 4000 3000 3600 3200 2800 3600 2900 3000 3000 2600 3200 3300 3700 1600 3000 4000 2300 3400 3800 Print Done
ts eBook Print References a. 100 m dash times (n = 6 top runners): b. Number of children (n = 13 families): c. Number of cars in driveway (n = 8 homes): Click here for the Excel Data File (a) Find the mean, median, and mode for each data set. (Round your answers to 2 decimal places.) 100 m dash times Number of children Number of cars in driveway Mean 100 m dash times Number of children Number of cars in driveway Median 9.87, 9.98, 10.02, 10.15, 10.36, 10.36 0, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 6 0, 0, 1, 1, 2, 2, 3, 5 Mode (b) Which of these three measures is the weakest indicator of a "typical" data value?
Use the data in the following table, which lists carbon dioxide concentrations (in parts per million) for each year from 1960 to 2009, with projected values used for the last four years. After finding the values of the mean and range for each decade, find the values of x, and R. Also find the values of LCL and UCL for an R chart, and find the values of LCL and UCL for an x chart. 1960s 318.4 319.5 321.8 322.9 324.8 325.4 326.9 328.5 330.3 331.4 1970s 333.4 334.6 335.5 337.1 339.3 340.4 341.4 343.1 344.7 346.5 1980s 348.1 348.8 351.2 352.1 353.8 355.4 356.9 358.5 359.8 360.6 1990s 361.9 363.6 365.8 366.7 368.6 369.2 371.7 372.4 373.5 375.2 2000s 377.6 378.7 379.6 381.8 382.8 384.2 386.3 387.6 388.7 390.5 x=enter your response here (Round to three decimal places as needed.) Part 2 R=enter your response here (Round to two decimal places as needed.) Compute the values of LCL and UCL for an R chart. LCL=enter your response here, UCL=enter your response here (Round to…

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