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3 years ago

What is the median of the data 234, 355, 470, 476, and 765?

2 answers:

7 0

Median: The number in the middle after placing the numbers in order.
The median would be 470.

How to solve for:

What you would do is line the numbers up from least to greatest. Your numbers should be lined up as 234, 355, 470, 476, 765. You would take two fingers and put one on each number at the end. Then you would take those same fingers and move it up a number at the same time. When doing this you would have only one number that is not covered up, which would be the number in the middle. Take note that this does not work for all equations because sometimes you would have two numbers left in the middle and you'll halve to solve for the median.

HOPE THIS HELPS! ^_^

Cloud [144]3 years ago

3 0

The median is 470 I found it on a online median calculator

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use the plot of the concentration of cu(no3)3 versus absorbance provided. if the absorbance of an unknown was determined to be 0

Helen [10]

Using the linear regression equation, the concentration of the unknown solution is 0.2161 M.

Linear regression describes the relationship of two variables. It may not be exact but it is the line that best fit the data. The equation for a linear regression is in the form y = bx + a, where x and y are the two variables.

If the absorbance of an unknown was determined to be 0.67 absorbance units, using the linear regression equation provided from the plot, substitute the value of absorbance to the variable y and solve for the value of x or the concentration.

y = 3.8674x - 0.1657

0.67 = 3.8674x - 0.1657

3.8674x = 0.67 + 0.1657

3.8674x = 0.8357

x = 0.2161

Hence, the concentration is 0.2161 M.

Learn more about linear regression here: brainly.com/question/25311696

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