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what is an example of a purchases requisition sample?
give a sample of purchases reuqisiton
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- What do you mean by Scatterplots, the Sample Covariance, and the Sample Correlation?You are given the following dataset from a sample of the population. Superhero Number of Villains Captured Number of Losses Average Hours of Sleep Spiderham 30 9 12 Alligator Loki 50 1 23 Iron Man 20 8 6 Phil Coulson 18 2 8 Yelena Belova 25 5 2 Round all answers to 2 decimal places. IE: 3.567 = 3.57 D. Calculate the correlation between the number of villains captured and average hours of sleep . If answer is negative, include negative sign. E. Calculate the sample covariance between the average number of losses and average hours of sleep . If answer is negative, include negative sign.In a study aimed at creating reference values, abdominal circumference (measured in cm) was measured in adult men. It was found that the relationship to age could be described as abdominal circumference = 82 + 0.3 x age a) What is the analysis that produces such a formula called? b) At what age is the average abdominal circumference 100 cm?
- Q11Q12: Both questions correlate with each other. Complete the following using the graphHow would you describe a correlation of -1? Group of answer choices There is a perfect linear relationship between x and y. There is a strong positive relationship between x and y. There is no relationship between x and y. There is a weak negative relationship between x and y. thanksA statistics instructor asks each student in his classes to report how much the student spent on textbooks for the semester. The figures reported by students are shown below. 725 735 555 420 385 480 505 270 405 285 585 450 515 560 500 395 545 595 365 455 505 345 555 485 560 475 520 455 355 590 550 495 505 505 495 465 370 355 480 385 515 605 480 410 485 560 475 350 465 435 455 380 320 535 565 520 510 495 485 650 490 295 555 540 565 490 570 380 610 600 390 375 390 335 525 445 540 490 485 555 440 560 405 590 520 470 560 510 340 385 585 635 415 455 590 385 505 510 545 405 470 560 495 515 495 595 565 615 470 680 465 470 310 470 505 465 375 360 650 460 560 500 375 500 370 415 490 440 470 525 535 640 385 475 425 595 505 365 485 495 390 380 585 690 Treat the data above as POPULATION data. 1 The mean expenditure on textbooks by all students is: a $485.38 b $495.29 c $505.40 d $515.71
- In a sample of 20 students, 7 are economics majors, 4 are psychology majors, 6 are math majors and 3 are English majors. What is the relative frequency of English majors? Group of answer choices 0.20 3 4 0.15 thanksDefine Sampling Distribution of the OLS Estimator?Twenty different statistics students are randomly selected. For each of them, their body temperature (°C) is measured and their head circumference (cm) is measured. a. For this sample of paired data, what does r represent, and what does ρ represent? b. Without doing any research or calculations, estimate the value of r. c. Does r change if body temperatures are converted to Fahrenheit degrees? Question content area bottom Part 1 a. Choose the correct answer below. A. r is a parameter that represents the value of the linear correlation coefficient that would be computed by using all of the paired data in the population of all statistics students, and ρ is a statistic that represents the value of the linear correlation coefficient computed from the paired sample data. B. r is a statistic that represents the proportion of the variation in head circumference that can be explained by variation in body temperature, and ρ is a parameter that represents…
- What is the relationship between the $ price of paint and the gallon demand for this paint? A random sample of (price, quantity) data for 7 days of operation was obtained. Construct a plot and describe the relationship between quantity and price, with emphasis on any unusual observations.(10, 100) (8, 120) (5, 200) (4, 200) (10, 90) (7, 110) (6, 150)A political pollster wants to ensure that their poll on attitudes toward separation of church and state gets responses from all major religious groups. What kind of sampling method should be used?The question is #1