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seraphim [82]
3 years ago
6

For which data set is a linear regression most reasonable?

Mathematics
2 answers:
Oxana [17]3 years ago
6 0

Answer:

The correct option is;

A. A set of nine data pairs with a correlation coefficient r = -0.4

Step-by-step explanation:

In statistical analysis, it is important to make use of an adequate sample size in order to arrive at a valid result. An analysis with a very small sample size can provide misleading results

When performing regression analysis it is generally accepted by researchers that each variable should have at least 10 observations.

Therefore, the data set having nine data pairs with a negative correlation of -0.4 will provide the most valid result that can then be used for generalization about the larger statistical population.

Arturiano [62]3 years ago
5 0

Answer:

C.

Step-by-step explanation:

edge 2020

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To join the gym there is a $100 annual fee and a $7 monthly fee for each class you attend.What is the total cost to be a member
marusya05 [52]

Answer:

$184, assuming attendance of one course (not class).

Step-by-step explanation:

Total cost for one year (x) = $100 + ($7/ month)x, where x is the number of months.  

As there are 12 months in one year:

Total cost (12) = $100 + ($7/monthly)(12) = $184

5 0
4 years ago
The cost of 5 squash and 2 zucchini is $1.32. Three squash and 1 zucchini cost $0.75. Find the cost of each vegetable.​
jonny [76]

Answer:

The cost of 1 squash  = $0. 18

The coat if 1 zucchini = $ 0.21

Step-by-step explanation:

Here,Let us assume the cost of  1 squash = $ m

Cost of 1 zucchini = $ n

Now, the cost of 5 squash   = 5 x ( cost of 1 squash)  = 5 x ($ m) = 5 m

Now, the cost of 2 zucchini  =   2 x ( cost of 1 zucchini)  = 2 x ($ n) = 2 n

So, the total cost of 5 squash and 2 zucchini =  Cost of (5 squash +  2 zucchini)

⇒ $ 1. 32  = 5 m +  2 n  ........  (1)

Similarly,

The cost of 3 squash   = 3 x ( cost of 1 squash)  = 3 x ($ m) = 3 m

And, the cost of 1 zucchini  = $ n

So, the total cost of 3 squash and 1 zucchini =  Cost of (3 squash +  1 zucchini)

⇒ $ 0. 75  = 3 m +   n  ........  (2)

or, n = 0.75 - 3 m

Substitute this value in (1) , we get

1. 32  = 5 m +  2 n ⇒ 1.32 =  5 m + 2 (0.75 - 3 m)

or, 1. 32 = 5 m + 2(0.75) - 2(3 m)

or, 1 . 32  =  5 m + 1.5 - 6m

⇒ m = 1. 5  - 1. 32  =  0.18

or, m = 0. 18

So, the cost of 1 squash  = $0. 18

And,the  cost of 1 zucchini = n = 0.75 - 3 m = 0.75 - 3 (0.18)  =  0.21

or, the cost if 1 zucchini = $ 0.21

5 0
3 years ago
State 2 advantages of thermal expansion​
enot [183]

Answer:

Adaptable Refrigerant Flow.

Keeps the Evaporator Active and in Optimal Performance.

Higher Power Efficiency.

Eliminates Risk of Compressor Breakdown.

Handles Variation in Refrigerant Charge.

Better Temperature Control.

6 0
3 years ago
Paolo is using his grandmother’s cookie recipe. He always doubles the amount of chocolate chips and oats. The recipe calls for 2
Arisa [49]

Answer:

i think its no im sure its 94.5

Step-by-step explanation:

if im wrong im so sorry csi solved it on a paper

4 0
2 years ago
Need help desperately.. y – 2.234 = 7.92
mart [117]

Answer:

251,734.

Step-by-step explanation:

4 0
2 years ago
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