blem with open-ended or unequal intervals is that theyw the frequency distribution ofvariable measured at the nominal level, an appropriate graph would be ale variable at the interval-ratio level, an appropriate graph would be6571706171758753 90827374835781TEST GRADES2# 3Frequency80F3$4are the scores of 25 students on a midterm test. Organize this information into a frequency distribution using a ten point grading scale for class intervals. Include columns for percentages and cumulative percentages. Write a brief desDODF4%5F51011time and moneyquestions and answers.elegance and symmetry.A6one variable.two variables.three or more variables.Any of the abovedo not permit the computation of midpoints.are useful only for nominal-level variables.can be used only with variables that have few scores.cannot be used for interval-ratio level variables.pie chart.histogram.frequency polygon.bivariate tableMacBook ProCumulativePercentagePercentageF612a pie chart.a histogram.a bivariate table.none of the above. Graphs are never used for interval-ratio level variables.&713F7814DIIF8(159DDF916C017F10

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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Problem 1P

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The accompanying data represent the wait time (in minutes) for a random sample of 40 visitors to a popular attraction in a large amusement park. Use the sample data to complete parts (a) through (d). Click the icon to view the data for wait times. (a) Construct a relative frequency histogram of the data. Comment on the shape of the distribution. Choose the correct graph below. O A. ARelative Freq. 0.6- 0+ 60 Wait Time (min.) What is the shape of the distribution? O O E A. Q 60 B. No A. Yes, there is(are) B. A Relative Freq. 0.6 outlier(s). 07 0 60 Wait Time (min.) O A. The distribution is bell-shaped and roughly symmetric about its peak between 25 and 30 minutes. B. The distribution is right-skewed because the peak is between 0 and 5 minutes and the right tail is much longer than the left tail. C. The distribution is left-skewed because the peak is between 55 and 60 minutes and the left tail is much longer than the right tail. D. The distribution is right-skewed because the peak is…
answer the following
A national survey asked people, "How often do you eat out for dinner, instead of at home?" The frequencies were as follows. Complete parts (a) through (h). (a) Construct a relative frequency distribution of the data. Relative Response Frequency Never Response Frequency Rarely Never 347 Sometimes Rarely 577 Most of the time Sometimes 927 Always Most of the time 283 (Round to three decimal places as needed.) Always 59 (b) What percentage of respondents answered "Always"? % (Round to one decimal place as needed.) (c) What percentage of respondents answered "Never" or "Rarely"? (Round to one decimal place as needed.) (d) Construct a frequency bar graph. Choose the correct answer below. A. 1000- 750- 500- 250- Frequency
77.5 >> 84 :The data given below shows the cumulative frequency of students' grades in a class 72.5> 64 |67.5 > 46 62.5> 19 57.5> 6 Grades Cumulative Frequency Reference: freq The best graph for representing the data shown in the previous table is called .frequency polygon .A O histogram.BO .time series graph.CO .ogive.DO
instructional purposes only 1st Semester SY 2021-2022 107 b. Which group is more varied in terms of their scores? Why? sessment Consider the scores of 30 students in an English class. 88 73 62 53 74 84- 78 81 86 81, 85 78 72 73 76' 63 68 82 85 72 74 73. 62 65 60 88 71 85 84 57 a. Using the data above, construct the following graphs: stem plots line graphs histograms/ box-plots b. Using also the data above, determine the first and third quartiles. Write a brief interpretation of the results. C. Determine also the 75th, 50™, and 24th percentiles. Interpret the С. results. Relow are the scores of 70 students in Math 101 class. Constructa lculate the mean the median and the
The data in the relative frequency bar graph below represents the number of stars earned by 140 performers in a talent competition. 35 30 25 20 15 10 1 Number of Stars How many performers earned exactly 3 stars? Be careful - compare the question wording to the scale on the y-axis of the graph. Notice it says "percentage of performers" Percentage of Performers (N = 140) N 寸

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What would the graph be for the following? Categories Observed frequencies Proportion Expected frequencies E=np Republican 25 0.35 75×0.35=26.25 Democrat 30 0.44 33 Other 20 0.21 15.75 Total n=75 1 75
Part 2. Complete the following statements. A) The cumulative enrolment is the ________ of the enrolment of the intervals smaller than the interval in question or equal to the latter. The graph of cumulative enrolment is represented by a function in ___________. B) The average, median and mode are three measures of _________ ____________. C) The term ________ refers to any data that deviates disproportionately from others. D) When the residual values are zero, then the correlation is called _________
10

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