Adele and Monte are discussing graphs with negative correlation. Adele claims that only graph B has a negative correlation. Mont
e claims that both scatterplots have a negative correlation.
Which statement it true regarding their claims?
A. Adele is correct because only lines may have a negative slope.
B. Adele is correct because the y values increase as the x values decrease in graph A, so it shows a positive correlation.
C. Monte is correct because both graphs show a strong correlation.
D. Monte is correct because in both scatterplots, the y values decrease as the x values increase so both have a negative correlation.
Which statement it true regarding their claims?
A. Adele is correct because only lines may have a negative slope.
B. Adele is correct because the y values increase as the x values decrease in graph A, so it shows a positive correlation.
C. Monte is correct because both graphs show a strong correlation.
D. Monte is correct because in both scatterplots, the y values decrease as the x values increase so both have a negative correlation.
2 answers:
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Answer:
The sample standard deviation is 393.99
Step-by-step explanation:
The standard deviation of a sample can be calculated using the following formula:
Where:
Sample standart deviation
Number of observations in the sample
Mean value of the sample
and simbolizes the addition of the square of the difference between each observation and the mean value of the sample.
Let's start calculating the mean value:
Now, let's calculate the summation:
So, now we can calculate the standart deviation:
The sample standard deviation is 393.99