Concept explainers
For Exercises 12–14, use the data in Illustration 4.
ILLUSTRATION 4
Write a frequency distribution.
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Elementary Technical Mathematics
- The following data were collected in a survey of 8th graders and summarize their cell phone status. What proportion of the 8th graders have cell phones? No cell phone Conventional cell phone user Smart phone user Boys 55 65 35 Girls 31 78 27arrow_forwardFind the mean of the following list of weights (in pounds) of Boston terriers at a per store: 3,6,9,11,13,3,16,20,1,12arrow_forwardFind the 5 number summary for the data shown below. 57 50 13 70 68 11 30 26 38 35 5 number summary:_,_,_,_,_arrow_forward
- The test scores for students are listed below: 41 45 46 53 57 59 63 68 69 70 71 74 74 75 79 80 82 83 92 92 95 Construct a boxplot for the data.arrow_forwardWhat is the mode, if any, for the dataset of 99;40;59;55;77;59;75;69;69;92;60;58;75;83?arrow_forwardThe following data represent the number of games played in each series of an annual tournament from 1933 to 2005. Complete parts (a) through (d) below.arrow_forward
- Find the mean for the following group of data items. 5, 6, 2, 8, 1, 3, 4, 8arrow_forwardRedo exercises 21 through 23 in section 8.2 of your textbook, about the three types of employment in a small town, using the following data:arrow_forwardHow to determine the arithmetic of the following data points?arrow_forward
- Represent the following data into pie chartarrow_forwardCreate a stem-and-leaf diagram from the following data, and then use it to answer questions 8, 9, and 10. 97, 83, 86, 93, 50, 97, 69, 82, 87, 99, 75, 100, 80, 95, 89, 72, 80, 86, 73, 87, 82, 62, 93, 60, 71, 62, 57, 51, 92, 24, 64, 77, 79, 48, 65, 53, 79, 78, 92, 62, 79, 78, 56, 82, 69, 94, 47, 88, 88, 87, 98, 79, 74 How would you describe the spread? A. Skewed low (most students failed) B. skewed high (most students got A's) C. clustered towards the middle (most students got B's & C's) D. Two or more different peaks Which score is an outlier? Which score lies exactly in the middle?arrow_forwardThe accompanying data file shows the price, the age, and the mileage for 20 used sedans. Price Age Mileage 13590 6 61485 13775 6 54344 22991 1 8246 15303 4 24856 16388 3 22100 16600 3 23702 16987 4 47401 18489 2 16888 18859 3 35380 19857 3 29634 11877 9 55792 14989 3 46183 15900 3 37009 16500 4 45521 9440 9 86902 12988 5 77241 15777 6 59647 10490 9 93241 8938 10 48221 11988 8 42408 1. Estimate the sample regression equation that enables us to predict the price of a sedan on the basis of its age and mileage. Note: Negative values should be indicated by a minus sign. Round your answers to 2 decimal places. [If you are using R to obtain the output, then first enter the following command at the prompt: options(scipen=10). This will ensure that the output is not in scientific notation.] 2. Interpret the slope coefficient of Age. A. The slope coefficient of Age is −0.03, which suggests that for every additional year of age, the predicted…arrow_forward
- Holt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL