The cumulative frequency distribution of the volume of petrol needed to fill the tank of150 different vehicles is shown below. Please sshow all inepth working Volume (litres)11-2021-3031-4041-5051-60Cumulative Frequency2459101129150d. For the class 21 -30, determine thei. The lower class boundaryii. Class widthiii. How many vehicles were recorded in the class 31 - 40?B. Estimate the mean,C. Byron estimates the median amount of petrol to be 43.5 litres. Explain why Byron's estimatesis incorrect.

Volumecumulative frequency11-202421-305931-4010141-5012951-60150

Answered: Volume (litres) 11-20 21-30 31-40 41-50…

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 valence of a song is measured from 0 to 10 and detects the musical positiveness conveyed in the song. Tracks with high valence sound more positive (e.g. happy, ch with low valence sound more negative (e.g. sad, depressed, angry). The valence was computed for 42,000 songs on Spotify in the genres of Techno, Techhouse, Trance, Trap, Psytrance, DnB, Hardstyle, Underground Rap, Trap Metal, Emo The table below shows the number of songs with a given valence measurement. Valence 1.5 2.5 4.4 5.3 6.3 6.7 7.7 8.7 9.7 Number of songs 3557 3175 2388 2078 1579 1438 1023 651 245 Source: Kaggle (a) Based on a scatter plot of the data in the table, why is a linear model appropriate? The scatter plot suggests a steady,---Select--- with a ---Select--- slope. (b) Find the linear model that gives the number of songs with a given valence, where v is the valence, for 0 ≤ v ≤ 10. (Round all values to two decimal places. L(v) = ---Select--- C (c) The constant rate of change for the model is (d) Use the…
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