ClassFrequency:Q3) For the following data80-84350-54 55-59 60-64 65-69 70-74 75-79371016129* :a) The arithmetic mean is65 O67.5 O6969.5none of all above O

We have given the following data to find the mean.

Answered: :Q3) For the following data 50-54 55-59…

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 histogram below summarizes the grades (out of 50) of all the students who wrote a midterm exam. 40 35 30 25 20 15 10 5 0 5 10 15 20 12 25 30 Grade 21 35 30 40 39 45 21 50 55 a. How many class intervals were used in the histogram? b. How many students wrote midterm exam? C. What is the modal class? d. What is the midpoint of the last class interval? e. How many students scored between above 15 but no more than 20? f. What percent of students scored above 40? g. What percent of students scored no more than 30? h. Is it possible to determine individual student grades from this histogram?
For the following frequency table, midpoint and relative frequency of the second class, class width and fourth actual class respectively are: Class f [30 – 39] 12 [40 – 49] [50 – 59] [60 – 69] [70 – 79] 8. 1 7 10 O 44.5,0.211, 9 and [59.5 69.5] O 44.5 , 0.211, 10 and [60.5 - 69.5] O 4.5 , 0.211, 10 and [59.5 69.5] O 4.5,0.211, 10 and [59.5 70.5] O 45,0.211, 10 and [59.5 69.5]
33 33 | 19 49 33 34 46 34 39 31 55 30 34 27 35 | 29 31 |32 24 36 29 57 50 39 45 53 44 50 45 36 23 42 50 36 38 40 26 43 | 35 29 | 22 36 34 53 30 26 26 | 22 30 31 a. Organize the user's ages in a frequency table of six classes with sSuitable class width (class interval). (You have to construct a table with classes, frequency, cumulative frequency, relative frequency, and percent relative frequency). b. Represent the users ages by suitable graphs (minimum 2 graphs).
The weekly salaries (in dollars) for 10 employees of a small business are glven below. (Note that these are already ordered from least to greatest.) 674, 697, 699, 738, 785, 807, 809, 905, 938, 968 Suppose that the $968 salary changes to $1188. Answer the following. (a) What happens to the mean? Oit decreases by $ It increases by S O It stays the same. (b) What happens to the median? It decreases by $ O It increases by $ O It stays the same.
Example 6.14 Convert the set of numbers 6, 7, 5, 10 and 12 into standard scores:
Number of ChildrenTable 1 shows the number of women (per 1000) between 15 and 50 years of age who have been married grouped by the number of children they have had. Table 2 gives the same information for women who have never been married.1 Number of Children Women per 1000 0 162 1 213 2 344 3 182 4 69 5+ 32 Table 1 Women who have been married Number of Children Women per 1000 0 752 1 117 2 72 3 35 4 15 5+ 10 Table 2 Women who have never been married 1http://www.census.gov/hhes/fertility/data/cps/2014.html, Table 1, June 2014. Condition gt requires numbers instead of "null" and "0" (a) Without doing any calculations, which of the two samples appears to have the highest mean number of children? Women who have been marriedWomen who have never been married Which of the distributions appears to have the mean most different from the median? Women who have been marriedWomen who have never been married…
What was the length of time on hold when you called your auto-insurance company? The responses from a survey of 35 people are listed below (in minutes). 2 11 30 35 15 20 18 7 14 24 25 21 5 8 19 18 22 12 12 15 16 21 27 31 12 8 4 14 19 20 34 16 12 7 10 Make a frequency table with FIVE CLASSES and a histogram to answer question 5 to 8. Which of the following statements are TRUE about the class limits and class width? Select all that apply. Group of answer choices A. The class width is 7. B. The five class limits are: 2-9 9-16 16-23 23-30 30-37 C The class width is 6.6 D. The five class limits are: 2-8 9-15 16-22 23-29 30-36 E. The five class limits are: 2-9 10-17 18-25 26-33 34-41
The numbers of students in the 10 schools in a district are given below. (Note that these are already ordered from least to greatest.) 204, 250, 255, 262, 274, 311, 369, 381, 389, 415 Send data to calculator Suppose that the number 204 from this list changes to 304. Answer the following. (a) What happens to the mean? It decreases by U O It increases by O It stays the same. (b) What happens to the median? O It decreases by O It increases by O It stays the same.
Find the five-number summary of the scores in the Math 130 test pre-sented in Table 4.1, page 112. Draw the boxplot.
The following is the data set for specific research regarding a certain product 15 19 14 20 13 23 16 25 17 12 20 11 23 10 14 11 25 12 11 15 8 17 8 18 16 19 17 19 24 What is the range of the data set? How many class intervals should be constructed? How many elements does the class width has? What is the frequency of the class interval with the highest value? What is the >cf of the 3rd to the highest class interval?
26- The ages of people in a class (to the nearest year) are as follows: Age Number of Students 14 120 200 200 90 30 102 18 19 20 21 2223 24 25 32 What is true about the median age? A. It must be 20 B. It could be any number between 19 and 21 C. it must be 21 D. it must be over 21

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:Q3) For the following data 50-54 55-59 60-64 65-69 70-74 75-79 80-84 7 10 16 12 9 3 * :a) The arithmetic mean is 65 O 67.5 O 69 O 69.5 O Class Frequency 3