Question

State Percent Taking Critical Reading Math Writing Combined Alabama 7% 557 552 549 1658 Alaska 46% 520 516 492 1528 Arizona 26% 516 521 497 1534 Arkansas 5% 572 572 556 1700 California 49% 500 513 498 1511 Colorado 20% 568 575 555 1698 Connecticut 83% 509 513 512 1534 Delaware 71% 495 498 484 1477 District of Columbia 79% 466 451 461 1378 Florida 59% 497 498 480 1475 Georgia 71% 490 491 479 1460 Hawaii 58% 479 502 469 1450 Idaho 18% 541 540 520 1601 Illinois 6% 588 604 583 1775 Indiana 63% 496 507 480 1483 Iowa 3% 610 615 588 1813 Kansas 7% 581 589 564 1734 Kentucky 7% 573 561 1707 Louisiana 7% 563 558 555 1676 1. Create a frequency polygon of all the numerical variables and explain the distribution of any two. 2. Find the mean, median and mode of the percentage taking the test and comment on them. 3. Rajesh wants to open a new sandwich bar in Jalandhar. He wants to offer organic products in them. He wants to estimate the demand for his sandwiches and the variants of it. What is the best way for him to collect this information? Why should he choose the said method? 4. Suppose the average amount of cash (in pocket, wallet, purse, etc.) possessed by 60 students attending a class is Rs 125. The median amount carried is Rs 90. (a) What characteristics of the distribution of cash carried by the students can be explained. Why is mean larger than the median? (b) Identify the process or population to which inferences based on these results might apply 5. One can say that statistical inference includes an interest in statistical description as well, since the ultimate purpose of statistical inference is to describe population data. Does statistical inference differ from statistical description? Discuss. 6. Give an example of the use of dispersion in each of the following areas of application in a business firm. (a) Production management (b) Financial management (c) Marketing management (d) Personnel management

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Answer:

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