All categories

3 years ago

Determine the average/mean of the following set of integers: -7, 12, 3, -4, 8, -1, 3

Mathematics

2 answers:

erik [133]3 years ago

6 0

Answer:

Step-by-step explanation:

If you add them all you get 14, divide it by the amount of terms, 7, and you get 2.

Mars2501 [29]3 years ago

6 0

The answer is 2 because when you add up all of the numbers you get 14 then you have to subtract 7 which leaves you with 2

You might be interested in

Please hurry find the measure of S

Andrews [41]

Answer:

m∠S = 29.5

Explanation:

S $\huge\boxed {\sf \triangle}$ R

In this triangle, QR = SQ, which means its an isosceles triangle, angle S and R is similar.

Thus solve:

m∠S = (180° - 121°)/2

m∠S = 29.5°

3 0

2 years ago

Read 2 more answers

Bob has $25 to spend on the school field trip after paying $14 for the cost of the field trip and $5.25 for lunch how much will

Ganezh [65]

$5. 75 is the amount of money Bob will have left.

4 0

3 years ago

Read 2 more answers

A college job placement office collected data about students’ GPAs and the salaries they earned in their first jobs after gradua

frez [133]

Answer:

X is the GPA

Y is the Salary

Standard deviation of X is 0.4

Standard deviation of Y is 8500

E(X)=2.9

E(Y)=47200

We are given that The correlation between the two variables was r = 0.72

a) $y = a+bx$

$b = \frac{\sum(x_i-\bar{x})(y_i-\bar{y})}{\sum(x_i-\bar{x})^2} = \frac{r \times \sqrt{var(X) \times Var(Y)}}{Var(X)} = \frac{0.72 \times \sqrt{0.4^2 \times 8500^2}}{0.4^2} = 15300$

$a=y-bx = 47200-(15300 \times 29) = 2830$

So, slope = 15300

Intercept = 2830

So, equation : $y = 2830+15300x$

b) Your brother just graduated from that college with a GPA of 3.30. He tells you that based on this model the residual for his pay is -$1880. What salary is he earning?

$y = 2830+15300 \times 3.3 = 53320$

Observed salary = Residual + predicted = -1860+53320 = 51440

c)) What proportion of the variation in salaries is explained by variation in GPA?

The proportion of the variation in salaries is explained by variation in GPA = $r^2 = (0.72)^2 =0.5184$

8 0

3 years ago

Please help ASAP please do these questions

Sedbober [7]

Answer:

a- 32

b-66

c-4

d-57

I tried.

Step-by-step explanation:

4 0

3 years ago

Name a diameter for the circle. •DG •EF •DH •FH

Sonbull [250]

It would be FH
A diameter is basically the length of the line through the centre that touches 2 points on a circles edges

4 0

3 years ago