Like other graphs, they use an x axis, and a y axis. It shows how one variable can affect another, hence the x and y (independent variable versus the dependent variable). With scatter plots you can use it to find a line of best fit that shows an average correlation relationship of the data. Scatter plots also allow you to find any outliers (those little dots that aren't in a pattern, correlation, or area with the majority of other points). It usually shows a relationship between TWO sets of data. :) :>
Hope this helps! :3 :>
Answer:
Step-by-step explanation:
To find your slope using two points, use the slope formula.
Your y1 term is -5, your y2 term is 4.
Your x1 term is -2, your x2 term is 4.
Now that we have your slope, you can use the slope and one of your points in point-slope form to find your y-intercept.
Answer:
Poisson distribution.
Step-by-step explanation:
We have the mean number of missing pulses per disk, which means that the distribution for X, the number of missing pulses, will be the Poisson distribution.
It is not the binomial distribution because we are not given the probability of a missing pulse on a disk, but the mean number of missing pulses.
Answer:
I did not understand
Step-by-step explanation:
Why is the question like that
Answer:
There are 68 students in the class after these changes.
Step-by-step explanation:
g = number of girls
b = number of boys
Because the ratio of girls to boys is 3:1, initally the equation was
g = 3b
Finally, we have
g-1 girls because one girl dropped the class
b+3 boys because three more boys signed up
Because the new ratio of girls to boys is 5:2, the new equation is
(g - 1)/(b + 3) = 5/2
Cross multiply.
2(g - 1) = 5(b + 3)
2g - 2 = 5b + 15
2g - 5b = 17
Then, substitute g (which is 3b because the first equation was g = 3b)
2(3b) - 5b = 17
b = 17
g = 3b = 3*17 = 51
g = 51
The final number of students in the class = 17 + 51 = 68
Answer: 68
