working clearly.2. The raw scores of 20 students of Aware International School who tookpart in an examination in Economics are given below. The pass mark is40%.3839123.282046341820a. What is the mean score of the students' marks?207064524864b. How many students passed the examinationc. What percentage of the students failed the examinationd. What is the range of the scores?e. How many students scored below the mean score?0-17yrs 18-54yrs162⁰90⁰55yrs108⁰4366536934

2) The total number of students is 20.

Answered: 2. The raw scores of 20 students of…

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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5. Use the following values to answer the items below: 4, 4, 4, 5, 5, 6, 6, 6, 6, 7, 8, 8, 9, 9, 10, 11 a. Create a simple frequency distribution table. Include columns for frequency, proportion, cumulative frequency, and cumulative percent. b. What is the N? c. What is the mean? d. What is the mode? e. What is the percentile rank of X = 6.5? f. What is the P75 ?
The mean age of two people in a room is 20 years. A 50 year old person enters the room. What is the mean age of the 3 people in the room now 20 30 33.3 35 none of the above
2.5
......
A company decides to investigate the amount of sick leave taken by its employees. A sample of seven employees yields the following numbers of days of sick leave taken in the past year. 1 1 3 0 0 63 Use this information to answer parts a through c. a. Find and interpret the range. The range is 6 days. Choose the correct interpretation of the range below. A. The largest difference between the mean and any other value is equal to the range. B. The number of days separating the fewest and most sick days taken is equal to the range. C. The range represents the average distance of an observation from the mean. D. The range gives the most useful value for measuring the spread of the data.
The following refer to the following data set: 69.4 63.3 68.4 56.9 81.4 81.4 40.6 79.8 56 81.4 What is the arithmetic mean of this data set? mean = What is the median of this data set? median = What is the mode of this data set? mode =
10. On a history exam, Roberto had a score of 72, which was exactly 3 standard deviations below the mean. The standard deviation for the exam is 4. a. What score was 2 standard deviations above the mean? b. What percent of the scores were at least 88? 72 c. What score represents the mean? d. What percent of the scores were between 80 and 88?
4. There are 35 students in a class. Fifteen of them are men and 20 of them are women. The mean height of the men is 69.65 inches, and the mean height of all 35 students is 67.18 inches. What is the mean height of the women?
A commuter travels many miles to work each morning. She has timed this trip 5 times during the last month. The time (in minutes) required to make this trip was 34, 39, 41, 35, and 41. The mean time (in minutes) required for this trip was _______. 35 41 38 37.5 35.5
Given the following histograms, determine whether the mean is greater than (>), less than (<) , or approximately equal (=) to the median. Write only the symbol in your answer. 20 03 6 9 12 15 18 21 24 27 30 33 NSWER: Mean Blank 1 Median Frequency
2. Which of the following is also equal to median score?* 75th percentile 5th decile 3rd decile 1st quartile
Q2. The 30% trimmed mean of the following data (120, 150, 170, 177, 178, 181, 198, 250, 450, 955} is: *

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