Draw a percentage curve for the following distribution of marks obtained by700 students in an examination:MarksNo. of studentsMarksNo. of students0-99.50-5910210-194260-697120-296170-792330-3914080-89240-49250Find from the graph () the marks at the 20th percentile, andequivalent to a mark of 65.(i)the percentile

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Answered: Draw a percentage curve for the…

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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Next question Use the given qualitative data to construct the relative frequency distribution. The 2324 people aboard a ship that sank include 276 male survivors, 1553 males who died, 362 female survivors, and 133 females who died. Complete the relative frequency distribution below. Relative Category Frequency Male survivors % Males who died % Female survivors % Females who died % (Round to one decimal place as needed.)
Suppose that, at the end of last semester, Marie gave her introductory statistics class a final exam. After grading these exams, she created a histogram illustrating the distribution of exam scores for the 70 students in the class. Each of the bars in this histogram includes only the left endpoint of the interval, except for the bar representing scores between 90 and 100 points, which also includes the right endpoint. What percentage of students scored between 60 and 80 points on the exam? Round your answer to the nearest tenth of a percent. Number of students who scored at least 80 points = students Percentage of students who scored between 60 and 80 points = %
Complete the table and find the mean, median and mode.
4) The table shows, for the years 1997–2012, the mean hourly wage for residents of the town of Pity Me and the mean weekly rent paid by the residents. Mean hourly wage (dollars) Mean hour. Mean weekly rent (dollars) Mean weekly rent (dollars) Year Year (dollar 116 1997 57 10.38 2005 28.99 59 113 1998 10.89 2006 28.63 2007 1999 62 11.96 112 36.75 14.55 2000 63 12.46 2008 86 17.90 2001 86 17.72 2009 90 2002 2010 119 28.07 90 14.67 131 35.24 2003 2011 17.97 100 122 2004 2012 22.23 31.87 115 Find the least squares line that uses mean hourly wage to predict mean weekly rent. Round values to the nearest ten-thousandth. Include a scatter plot with the regression lino
Which of the following is not a good interpretation of a seasonal index of 1.26 for fall quarter sales? O a. Fall quarter sales are 26 perbent higher than the annual average. O b. Fall quarter sales represents 1.26 times the annual average. O c. Fall quarter sales represents an increase of 26 percent over last year's annual average. O d. Fall quarter sales average 126 percent of annual sales.
The following frequency distribution represents the scores on a math test. Find the class midpoint of scores for the interval 40-59. Number of Students 2 4 Scores 0-19 20-39 40-59 60-79 80-99 OA 49.0 OB. 49.5 OC. 48.5 OD. 50.5 655 C
On the basis of a population survey, there were 84.4 million males and 98.2 million females 25 years old or older in a certain country. The educational attainment of the males and females is shown in the accompanying table. Complete parts (a) through (d) below.
The graph below is an ogive of scores on a math test. The vertical axis in an ogive is the cumulative relative frequency and can also be interpreted as a percentile. Use the graph to approximate the test score that corresponds to the 30th percentile. O A. 9 ОВ. 4 Percentile Ranks of Math Test Scores ОС. 56 100- 90- O D. 50 80- 70- 60- 50- 40- 30- 20- 10- 0- -> O 10 20 30 40 50 60 70 80 90 100 Test Socore (96) Click to select your answer. Percentile
#9
The following graph shows the average grade point average for a particular college from 2004 until 2011. Average GPA 3.20 OA OC OD 3.15 3.10 3.05 3.00 2.95 2.90 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 Year Which one of the following statements is correct? A) Historically, the Average GPA of the college tends to decrease. B) There appears to be no relationship between Year and Average GPA. C) Year is the dependent variable in the graph. D) Average GPA is the dependent variable in the graph.
Q1/ A// Determine the relative cumulative frequency for the data below. Class 0-10 10-20 20-30 30-40 40-50 50-60 60-70 interval Frequency | 95 B// Draw the polygon curve for the data above. 30 60 40 20 10
Class: Frequency: Calculate the median of the following frequency distribution: 30-40 40-50 10 16 20-30 6 50-60 18 60-70 12 70-80 10 80-90 8

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