A test set is the data set used to:

Mathematics

1 answer:

ahrayia [7]4 years ago

3 0

Answer:

Step-by-step explanation:

The “training” data set is the general term for the samples used to create the model, while the “test” or “validation” data set is used to qualify performance. Perhaps traditionally the dataset used to evaluate the final model performance is called the “test set”.

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−4(3.2−3k)+0.2(9+15k) can you help me please

ehidna [41]

−4(3.2−3k)+0.2(9+15k)

Distribute:

=(−4)(3.2)+(−4)(−3k)+(0.2)(9)+(0.2)(15k)

=−12.8+12k+1.8+3k

Combine Like Terms:

=−12.8+12k+1.8+3k

=(12k+3k)+(−12.8+1.8)

=15k+−11

6 0

3 years ago

Read 2 more answers

A multiple choice test contains 20 questions with answer choices A, B, C and D. Only one answer choice to each question represen

elena-s [515]

Answer:

0.1686 = 16.86% probability that a student will answer exactly 6 questions correct if he makes random guesses on all 20 questions.

Step-by-step explanation:

For each question, there are only two possible outcomes. Either the students answer it correctly, or he/she does not. The probability of answering a question correctly is independent of any other question. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$