Q1 A) List down the measures of central tendency and measures of dispersion 2) The operations manager of a plant that manufactures tires wants to compare the actual inner diameters of two grades of tires, each of B) which is expected to be 575 millimeters. A sample of five tires of each grade was selected, and the results representing the inner diameters of the tires, ranked from smallest to largest, are as follows. Grade X grade Y 568 570 575 578 584 573 574 575 577 578 requirement. a) for each of the tow grades of tries, compute the mwan, median, and standred deviation. b) which grade of tire providing better quality? explain. c) what would be the effect on your answer in (a) and (b) if the last value for grade Y were 588 insert 578 explain. C) The file contins the overall miles per gallon (MPG) OF 2010 family sedan: 24 21 22 23 24 34 34 34 20 20 22 22 44 32 20 20 22 20 39 20 Source: data extracted from "vehicle Rating" Consumer Reports,Reports April,p.29. a) Compute the mean, median, and mode. b) compute the variance, standrad deviation, and range.
Q1 A) List down the measures of
B) which is expected to be 575 millimeters. A sample of five tires of each grade was selected, and the results representing the inner diameters of the tires, ranked from smallest to largest, are as follows.
| Grade X | grade Y |
| 568 570 575 578 584 | 573 574 575 577 578 |
requirement.
a) for each of the tow grades of tries, compute the mwan,
b) which grade of tire providing better quality? explain.
c) what would be the effect on your answer in (a) and (b) if the last value for grade Y were 588 insert 578 explain.
C) The file contins the overall miles per gallon (MPG) OF 2010 family sedan:
24 21 22 23 24 34 34 34 20 20 22 22 44 32 20 20 22 20 39 20
Source: data extracted from "vehicle Rating" Consumer Reports,Reports April,p.29.
a) Compute the mean, median, and
b) compute the variance, standrad deviation, and
D) the file contains the cost (in cents) per 1- ounce serving for sample of 13 chocolate chip cookies. the data are as follows:
54 22 25 23 36 43 7 43 25 47 24 45 44
soure: data extraceted form "chip, chip, hooray " consumer reports June 2009, p. 7.
a) Compute the mean, median, and mode.
b) Compute the variance, standred deviation, and range.
E ) A bank branch located in a commercial district of a city has the business objective of developing an improved process for serving customers during the noon-to-1:00 P.M. lunch period. The waiting time, in minutes, is defined as the time the customer enters the line to when he or she reaches the teller window. Data are collected from a sample of 15 customers during this hour. The file contains the results, which are also listed here:
4.21 5.55 3.02 5.13 4.77 2.34 3.54 3.20 4.50 6.10 0.38 5.12 6.46 6.19 3.79
a) Compute the mean and median.
b) Compute the variance, standard deviation, and range.
PLEAS ANSWER ALL Q1 A&B&C&D&E
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