In Galveston, Texas, the amount of beach available for use depends on the tides. At high tide the water comes farther ashore. There is usually a baseline established so that the changes can be measured. It is known that the low tide occurred at 3 AM and the water was 0.2 feet above the baseline at that time. The water at high tide was at 1.8 feet above the baseline and the time between high tide and low tide was 7.5 hours. Part A: Write an equation that would model this data. Part B: What is the height of the tide at 9 AM? (Make sure to use the math type button to help you type your answers.)

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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.  

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