WorksheetsAcing the Interview
Total questions: 10
Worksheet time: 4mins
Name
Class
Date
1.
Which regularization can help with features selection
a)
L1/Lasso
b)
L2/Ridge
2.
When does Vancouver WiDS first start
a)
2018
b)
2017
c)
2019
3.
Which of the following is required to test the null hypothesis of F-distribution
a)
critical value
b)
significance level
c)
degrees of freedom
d)
all the options
4.
[Select all that applies and submit] What are the common techniques to address overfitting problem
a)
regularization
b)
bagging
c)
boosting
d)
early stopping
e)
cross validation
5.
Which of the following can be used to analyse whether the null hypothesis can be rejected.
a)
T-score
b)
Z-score
c)
P-value
d)
F-value
6.
More often, Null Hypothesis is expressed as which of the following
a)
There is no relationship between two quantities
b)
There is strong relationship between two quantities
7.
In statistics, statistical significance is attained when p-value is __________ the significance level
a)
greater than
b)
less than
c)
equal to
8.
What is the time complexity to find a element in a dictionary (n=size of the dictionary)
a)
O(1)
b)
O(n)
c)
O(n^2)
9.
In a confusion matrix, how to calculate recall
a)
recall = (true_positive + true_negative) / total
b)
recall = true_positive / (true_positive + false_negative)
c)
recall = true_positive / (false_positive + true_positive)
10.
What is the Fibonacci sequence
a)
0, 1, 1, 2, 3, 5, 8, 13, 21....
b)
2,4,6,16,32,64...
c)
1, 3, 6, 10, 15, 21, 28, 36, 45....
100 %
