Consider the graph below analyzing the size of tree vs. accuracy for a decision tree which has been pruned back to the red line. 0.9 O.85 0.8 0.75 0.7 0.65 On trainine data On validation data- On validation data (during pruning) 0.6 0.55 0.5 20 70 100 Size of tree (number of nodes) Figure 2: Pruned decision tree Refer to Figure 2. Let's say that we have a third dataset Dnew (from the same data distribution), which is not used for training or pruning. If we evaluate this new dataset, approximately what is the accuracy when the size of the tree is at 25 nodes, and why? Select one. Select one: Around 0.76 (slightly higher than the accuracy for validation data at 25 nodes) Around 0.73 (the same as the accuracy for validation data at 25 nodes) Around 0.70 (slightly lower than the accuracy for validation data at 25 nodes) None of the above Which of the following gives us the best approximation of the true error? Line corresponding to training data Line corresponding to validation data Line corresponding to new dataset Dnew Which of the following are valid ways to avoid overfitting? Select all that apply. Select all that apply: O Decrease the training set size. O Set a threshold for a minimum number of samples required to split at an internal node. O Prune the tree so that cross-validation error is minimal. O Maximize the tree depth. O None of the above.

Q: -5 dx Evaluate 2x 10 A B c) 1 (D) 2

A: formula:

Q: 30 Evaluate (1 + i)

A:

Q: 4 Evaluate -1 0 5 by: 3 - 2 expanding along the first row expanding along the second column A A 1.…

A:

Q: a3-16a

A: a³−16a ⇒a(a²−16) ⇒a(a² −4²) ⇒a(a+4)(a−4)

Q: 100 Find the coefficient of x10 in the expansion of (2x +;

A: To find the coefficient of x10 in the expansion of 2x+1x100 we will use(r+1)th term in the expansion…

Q: 6 2/5 + 1 3/10

A:

Q: 1 1 dx 3 5 x +x4

A:

Q: Find the coefficient of x5in the expansion of (1 – 2x + 3x2)5

A: I have solved Algebraically

Q: 9 – 4x > –3

A: The given inequality is 9-4x>-3

Q: Write the binomial expansion for (x + 2)°. (x+ 2)° =D

A:

Q: 3 dx 9

A: The given integral is: I=∫x3x2-9dx

Q: Find the coefficient of x4 in the expansion of (2-3x)6

A:

Q: 50/21 simplest form

A: Compute the simplest form of 50/21.That is, divide 50 by 21.

Q: Find the 7th and 11th term of the expansion (y − x)^14

A:

Q: 1 3] [1 3 3 0 -1 2. 30 2

A:

Q: 1/4 +5/4

A: Solution: The objective is to find the value of the given expression

Q: ミ っa 9.

A: We find the value of r in above questions.

Q: Find a if the 17th and 18th terms of the expansion (2 + a)5⁰ are equal.

A:

Q: find the slopet y-intercept the line 2.

A: Given equation of line is  2x+3y=24

Q: Write the first, third and fifth terms of the expansion of (3x – 5y)5.

A: Write the first ,third and fifth term of the expansion of (3x-5y)5.

Q: expansion of (1-2m)“

A:

Q: ext dx 8X-X

A: We have to evaluate the ∫dx8x-x2

Q: 36 70

A:

Q: In the expansion of (x + 4/x)12, find the term without x. a. 63 360 C. 506 880 b. 126 720 d. 3 784…

A:

Q: 1 3 8.

A:

Q: Prove that n² +n is divisible by 2, where n E N.

A:

Q: Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and…

A: In question, We'll find the indicated z value when the graph is followed standard normal…

Q: Find the coefficient of x8 y18  in the expansion of (1x2  -4y6)7

A:

Q: Write the binomial expansion of (2x – 1) as a polynomial in simplest form.

A:

Q: efind the intergrationa

A:

Q: 3 S x²_9

A:

Q: Secă KosX

A: