Structural engineers use wireless sensor networks to monitor the condition of dams and bridges. An article describes an experiment in which accelerometers were placed on the Golden Gate Bridge for the purpose of estimating vibration modes. For 18 vertical modes, the system was underdamped (damping ratio < 1). Following are the damping ratios and frequencies for those modes. Damping Ratio Frequency (Hz) Damping Ratio Frequency (Hz)
0.3 2.72 0.5 1.88
0.3 2.84 0.6 0.77
0.3 3.77 0.6 1.26
0.4 2.07 0.6 1.66
0.4 2.2 0.7 0.89
0.4 2.34 0.7 1
0.4 2.61 0.7 0.66
0.5 1.8 0.8 1.13
0.5 1.93 0.8 0.37

Required:
a. Construct a scatterplot of frequency (y)versus damping ratio (x).
b. Compute the least-squares line for predicting frequency from damping ratio.
c. If two modes differ in damping ratio by 0.2, by how much would you predict their frequencies to differ?
d. Predict the frequency for modes with damping ratio 0.75. Round the answer to three decimal places.
e. For what damping ratio would you predict a frequency of 2.0?

see below

step-by-step explanation:

7.   there are 10 data points in the set.   the middle point is between 5 and 6.   the middle point in the top half is 8   and the middle point in the bottom half is 3. to find the iqr , take point 8 and subtract point 3

mid term   point 8 = 100   point 3 = 88

iqr = 100-88 = 12

final   point 8 = 93   point 3 = 78

iqr = 93 - 78 = 15

the final has the greatest iqr

6.   b - there is a high data value that causes the data set to be asymmetrical for the males: the data for males are high and asymmetrical .   there is an outlier for the males that skews the data

5.   the   iqr is a better measure of spread for the movies and basketball games.   since the basketball game has an outlier, we do not want to use standard deviation for measurement.  

3.   the exam median is much higher than the class median.   the median line is farther to the right on the exams

2.   there is no way to tell what the means are from the box and whisker plots.  

the height of the surface increases from the center out to the sides of the road

it is c!

2

step-by-step explanation:

v=125

step-by-step explanation: