In a city with three high schools, all the ninth graders took a Standardized Test, with these results:High SchoolMean score on testNumber of ninth gradersGlenwoodCentral CityLincoln High779070mean of all ninth grader's scores =281343185The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the citywas 79. Of course, that is incorrect. What is the mean score for all ninth graders in the city? Round to onedecimal place.

For three high school, mean score on test and number of ninth graders is given.i.e n1=281, n2=343,…

Answered: In a city with three high schools, all…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The Census Bureau Web site gives several choices for "average income" in its historical income data. In 2006, the median income of American households was $48,201. The mean household income was $66,570. The median income of families was $58,407, and the mean family income was $77,315. The Census Bureau says, “Households consist of all people who occupy a housing unit. The term ‘family’ refers to a group of two or more people related by birth, marriage, or adoption who reside together.” Identify the reason for mean incomes for households being higher than median incomes for households.
A professor has twelve students in her class. Her class took a test with the following results: 73, 55, 72, 98, 77, 93, 58, 78, 79, 95, 96, 86 a. What was the mean grade on the test? (Simplify your answer and round to one decimal place.) b. What was the median grade on the test? (Simplify your answer and round to one decimal place.) C c. What was the mode? If there are no modes, enter “NONE”. Otherwise, enter the mode (or modes, separated by a comma). Mode(s) = $ Mean = 5 4 I Median = JO D f V % 5 t 6.0 b 6 Oll y h & 7 n u - * 00 8 m ( 9 k S O n L O A р alt 7 + [ // ctri
B. A statistics professor administered an exam to three different classes. The 8:00 class had 20 students and an average score of 82.4. The 9:00 class had 24 students and an average of 78.9. The 29 students in the 10:00 class had an average of 87.3. Calculate the òverall average for all three classes combined.
In a survey that asked individuals about their favorite styles of music, 37 replied rock, 27 said they preferred pop music, 14 stated they like classical music the most, and 3 individuals stated they preferred opera. Based on this data, what would be the mode? Why couldn’t the mean or median be used to describe this set of values?
In a city with three high schools, all the ninth graders took a Standardized Test, with these results: High School Mean score on test Number of ninth graders Glenwood 76 272 Central City 93 325 Lincoln High 73 180 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was 80.7 . Of course, that is incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place.mean of all ninth grader's scores =
A student’s test grades are: 85, 75, 100, 90, and 90. On the two questions below, round to the nearest whole number when relevant. Show calculations and clearly report answers to each of the two questions below. a. What is the mean, or average, test grade for this student? b. What is the median test grade?
Frank’s Furniture employees earned the following amounts last week: $351.96 $195.35 $219.93 $492.35 $544.40 $250.90 $363.64 $455.08 $286.12 What is the IQR for this data set?
In a city with three high schools, all the ninth graders took a Standardized Test, with these results: High School Mean Test Score Number of ninth graders (Frequency) Glenwood 81 284 Central 95 323 Lincoln 69 154 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was the average of 81, 95, and 69, which is 81.7. Of course, that is incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place. mean of all ninth grader's scores =
Winston has just gone grocery shopping. The mean cost for each item in his bag was $3.48. He bought a total of 9 items, and the prices of 8 of those items are listed below: $2.75,$4.06,$3.16,$3.92,$4.29,$2.77,$3.01,$4.57 Determine the price of the 9th item in his bag.
uction. Solve the following problem. A math class of 20 students had their had their chapter test. The following are the scores of 20 the students: 16, 27, 25, 46, 22, 43, 39, 43, 43, 49, 34, 22, 35, 27, 25, 22, 30, 29, 26, 37. Compute for its mean, median, and mode.

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