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Hogar Banco de preguntas Matemáticas Estadísticas Archive 2024 December 21

Statistics Questions from Dec 21,2024

Browse the Statistics Q&A Archive for Dec 21,2024, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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What is a scatter plot? 15. Suppose data collected for heights (in cms) of 390 cows were tabulated in a frequency distribution and the following results were obtained. fi: CM1 where CMi ith class mark Determine: a) Class interval size (class width), Class limits, Class boundaries and class marks b) The less than cumulative frequency distribution c) The class intervals having the highest frequency d) Above which height do we find of the cows? e) Below which height do we get of the cows? Draw a) histogram b) a frequency polygon c) C. a less than ogive for the above data What is a scatter plot? What is a scatter plot? 12. En los examenes finales de una escuela: Al menos el aprueban Fisica. : Al menos el de los alumnos aprueban las Matematicas : Al menos el aprueban la Filosofia. aprueban el Inglés. Cuantos alumnos, al menos, aprueban esas cuatro asignaturas? SECTION 2.3-ADDITIONAL DISPLAYS OF QUANTITATIVE DATA This section talls more of visual summarization of qualitative data using charts and graphs. 10. Give the names to all the tables and graphs used. Only a few of them will be on erams, 11. In a frequency polygon, what values go on the xaxis and what go on the havis? 12. In an ogive, what values go on the xaxis and what go on the yavis? NOTES: Pay extra attention on what numbers are used on the x-avis. SECTION 2.4-GRAPHICAL MISREPRESENTATIONS OF DATA 13. Describe three ways data can be misrepresented through graphs. As part of a study into healthy lifestyles, Jing visited Surrey Hills University. Jing recorded a person's position in the university and how frequently they ate a salad. Results are shown in the table. Jing conducted a test for independence at a level of significance. 2. State the null hypothesis. [1] 3. Calculate the - value for this test. [2] In the past month, Ryan has had five pizzas delivered. He kept a record of how long it took to get the pizzas: 20 minutes, 28 minutes, 35 minutes, 40 minutes, and 25 minutes. If the sixth time he orders pizza, it takes 95 minutes, how will this affect his data? Determine the mean, median, and mode for the following data set, which shows recent real estote sales in your neighborhood (in thousands of dollars): 180, 270, 310, 250, 440,320,290, 270,330,340 a.) Mean Median Mode b.) Mean Median Mode c.) Mean Median Mode You read that of Americans over the age of 30 prefer Coke over Pepsi. You want to test this by designing an experiment with 100 people. Which of the following is the population in your experiment? a.) The 100 people b.) All Americans over the age of 30 d.) Coke and Pepsi
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