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Oduvanchick [21]
3 years ago
6

Which of the following statement is true about k-NN algorithm?

Mathematics
1 answer:
BaLLatris [955]3 years ago
6 0

The answer is D. All of the above.

The computational complexity of K-NN increases as the size of the training data set increase and the algorithm gets significantly slower as the number of examples and independent variables increase.

Also, K-NN is a non-parametric machine learning algorithm and as such makes no assumption about the functional form of the problem at hand.

The algorithm works better with data  of the same scale, hence normalizing the data prior to applying the algorithm is recommended.

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Erika calculated that she would spend $115 on school supplies this year. She actually spent $82.50 on school supplies. What is E
DerKrebs [107]
The equation to find percent error is:
percent error=(experimental-theoretical)/theoretical *100
So, (115-82.5)/82.5=0.393939*100
39.3939%, or 39.94%

Hope this helps!!
6 0
3 years ago
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The product of 7/16,4/3, and 1/2 is
Lady_Fox [76]
The answer would be 7/24.
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3. 0.7kg : 800g<br> I’m pretty bad with ratios lol
julsineya [31]

Answer:

7:8

Step-by-step explanation:

Convert o.7 Kg to Gram

It will be 700 grams

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<u>700</u>

800

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What is 105354.00085 x 17
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ANSWER:

1791018.01445

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3 years ago
Check whether x² +4x +4 is prefect spuare expression or not . if so factorise the expression<br>​
irinina [24]

Answer:

It is a perfect square expression.

It factors to (x+2)^2

===========================================================

Explanation:

The general format for a perfect square is

(a+b)^2 = a^2 + 2ab + b^2

Which can be seen through the use of the FOIL rule.

Compare x^2+4x+4 with a^2+2ab+b^2, and we have these three equivalences:

  • x^2 = a^2 .... first terms
  • 4x = 2ab .... middle terms
  • 4 = b^2 .... last terms

Since x^2 = a^2, we can apply the square root to both sides to get a = x. Similarly, 4 = b^2 leads to b = 2. We could get b = -2, but that would mean 2ab = 2x*(-2) = -4x instead of 4x. So we'll stick with b = 2 instead.

Because a = x and b = 2, we then can say:

(a+b)^2 = a^2 + 2ab + b^2

(x+2)^2 = x^2 + 2*x*2 + 2^2

(x+2)^2 = x^2 + 4x + 4

Showing that x^2+4x+4 factors to (x+2)^2.

7 0
3 years ago
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