The table below presents the utility costs (in'000) of a group of your friends. The midpoint of the fourth class isBoundariesCumulative Frequency4.5 10.5416.51622.52128.52334.526Select one:a. 25.5 b. 7.5с. 19.5d. 13.5e. 31.5

To find the midpoint of the 4th class, we need to add the boundary of classes 4 and 5 and then…

Answered: The table below presents the utility…

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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39. The following table gives the approximate increase in sea level in inches over 20 years starting in the given year. Estimate the net change in mean sea level from 1870 to 2010. Starting Year 1870 1890 1910 1930 1950 1970 1990 20-Year Change 0.3 1.5 0.2 2.8 0.7 1.5 4 Table 5.3 Approximate 20-Year Sea Level Increases, 1870-1990 Source: http://link.springer.com/article/ 10.1007%2Fs10712-011-9119-1
Suppose you studying the relationship between time studied for the LSAT and score on the LSAT. To study this you randomly select 9 students who took the LSAT, ask them how long they prepared for the exam and then record their score. Hours Studied 80100120120150160180200210 Score (in points) 140131138143158149162161157 (a) Draw a scatterplot for this data. Make sure to label your axes. (b) Calculate the correlation coefficient for this data. Is there enough evidence for a correlation? Why or why not? (c) Give the equation of the least squares regression line for this data. (d) Interpret the slope of the LSR in the context of this situation. (e) What is the predicted score for a student who studies for 140 hours? Would you trust this prediction? Why or why not? (f) Calculate the residual for the LAST data point in your sample, the student who studied 210 hours and got a score of 157 points. Make sure to include units for your residual.
FOUR The following are the P/E ratios (price of stock divided by projected earnings per share) for 16 banks.20, 14, 19, 25, 19, 22, 31, 29, 14, 18, 15, 20, 22, 18, 18, 29Find 10th and 75th percentiles for these ratios.
1.0 0,9 0.8 8,7 8,6 Cunulative Relative Frequency- 0,5 8.4 8,3 0.2 0,1 10 15 20 Values Based on the graph above, what is the relative frequency of the 15-to-20 class?
The 2nd picture is the question
The given data represents a frequency distribution of the F-scale intensities of recent tornadoes. Use the frequency distribution to construct a frequency polygon. Does the graph suggest that the distribution is skewed? If so, how? Construct a frequency polygon using the data. Choose the correct graph below. OA. Frequency 30- ^ F-Scale Q OB. 30- Frequency Does the graph suggest that the distribution skewed? If so, how? O A. The distribution does not appear to be skewed. O B. The distribution appears to be skewed to the right (or positively skewed). O C. The distribution appears to be skewed to both sides. O D. The distribution appears to be skewed to the left (or negatively skewed). F-Scale Q G O C. 30- Frequency F-Scale Q Tornado F-Scale 4 Frequency 25 16 O D. Frequency 30- I F-Scale Q Q
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Boundaries	Cumulative Frequency
4.5
10.5	4
16.5	16
22.5	21
28.5	23
34.5	26

The table below presents the utility costs (in '000) of a group of your friends. The midpoint of the fourth class is Boundaries Cumulative Frequency 4.5 10.5 4 16.5 16 22.5 21 28.5 23 34.5 26 Select one: a. 25.5 b. 7.5 с. 19.5 d. 13.5 e. 31.5