What is the smaller of the numbers 1 and -10/3
2 answers:
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Since we cannot be 100% sure which test Frank did better on, we need to find a way to make the comparison doable. This can be done by converting Frank's score to the standard score (or also known as the z-score).
The z-score is calculated through the following formula:
where X is Frank's original score.
Converting Frank's scores to a standard score accounting for both the mean and standard deviation of the population who took the test will make the comparison possible.
We get the following z-scores after conversion:
If you read up more on the concept of z-score, you may know that this score just means the amount of standard deviations a data falls with respect to the mean. Comparing Frank's two scores, we can see that they are both below the mean. However, it can be seen that Frank's z-score for his chemistry test is lower than his z-score for his biology test.
This suggests that Frank scored relatively poorer in chemistry than he did in biology.
ANSWER: Frank did better in his biology test.
The z-score is calculated through the following formula:
Converting Frank's scores to a standard score accounting for both the mean and standard deviation of the population who took the test will make the comparison possible.
We get the following z-scores after conversion:
If you read up more on the concept of z-score, you may know that this score just means the amount of standard deviations a data falls with respect to the mean. Comparing Frank's two scores, we can see that they are both below the mean. However, it can be seen that Frank's z-score for his chemistry test is lower than his z-score for his biology test.
This suggests that Frank scored relatively poorer in chemistry than he did in biology.
ANSWER: Frank did better in his biology test.
Answer:
y = 1.x + 3
Step-by-step explanation:
Let the equation of the line is,
y = mx + b
Here, m = slope of the line
b = y-intercept
Slope of a line passing through two points and
is given by,
m =
Since, y-intercept and x-intercepts are equal,
Let the given line passes through (0, 3) and (-3, 0),
Slope of the line (m) = = 1
y-intercept of the line 'b' = 3
Equation of the line will be,
y = 1.x + 3