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3 years ago

Determine whether the following possible responses should be classified as ratio, interval, nominal or ordinal data.

Mathematics

1 answer:

nexus9112 [7]3 years ago

3 0

Answer:

1. Nominal

2. Interval

3. Interval

4. Nominal.

Step-by-step explanation:

Nominal scales are used when the variable we're interested in has NO quantitative value.

Therefore, the college you are enrolled in and your hometown are examples of nominal data.

Interval scales are used when the variable we are interested in has quantitative value and the values have an order and the difference between each value is the same.

For the case of number of students, we know, for example, that 20 students < 21 students, and the difference between 20 and 21 is the same as the one between 21 and 22. The same applies for the age of your classmates.

Therefore, the age of your classmates and the number of students in a statistics course is an interval data.

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2 years ago

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3 years ago

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3 years ago

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Hoochie [10]

X^2+16-38=0
find what 2 numbers multiply to get -38 and add to get 16
find factors of 38
2 times 19
there is no way to use common factor so use quadratic formula which is
x= $\frac{ -b+\sqrt{b^2-4ac} }{2a}$ or x= $\frac{ -b-\sqrt{b^2-4ac} }{2a}$

ax^2+bx+c=0 subsitte
a=1
b=16
c=-38
subsitute
$\frac{ -16+\sqrt{16^2-4(1)(-38)} }{2(1)}$ = $\frac{ -16+\sqrt{256+152} }{2}$ = $\frac{ -16+\sqrt{408} }{2}$ = $\frac{ -16+2\sqrt{102} }{2}$ = $-8+\sqrt{102}$
so the answers for x are $-8+\sqrt{102}$ and $-8-\sqrt{102}$ which are aprox -2.099504938362 and +18.099504938362
so it would be
(x-[-8+√102])(x+[8+√102])=0

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2 years ago

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Answer:

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