WorksheetsStat. & Data sci. (midterm)
Total questions: 25
Worksheet time: 58mins
Which choice shows the 3 main distinct of data sciences (from Drew Conway)
Hacking skills, Math&Statistics, Substantive Expertise
Hacking skills, Static knowledge, Machine Learning
Math, Machine Learning, Substantive Expertise
Math, Statistics, Regression
Which is the structured data?
Data from recorded sound
Data from file
Data from Text
Data from table
Which question needs the qualitative answer?
"How many children do you have?"
"For your house, How many square metres?"
"Do you work full-time or part-time?"
"How many workers are currently employed?"
Which is the scatter plot?
Which answer is correct?
There are 2 main type of averages consisting of mean and median
Mean, median and mode are always the same value
Median does not care about outliers
Mode is only applicable to numerical data
Finding mean, median, mode of this data
13, 18, 13, 14, 13, 16, 14, 21, 13
mean = 15, median = 14, mode = 13
mean = 16, median = 10, mode = 13
mean = 10, median = 10, mode = 10
mean = 12, median = 13, mode = 14
What type of average is suitable for election in your country?
Mean
Median
Mode
all choices are correct
The skewness of data is positive when ….
mean = 20 and median = 20
mean = 20 and median = 18
mean = 20 and median = 22
mean = median = mode = 10
Which is possible for Inter Quartile Range(IQR) = 30
Mean = 30, Q1 = 10, Q2 = 20 and Q3 = 50
Mean = 50, Q1 = 30, Q2= 20 and Q3 = 50
Mean = 40, Q1 = 20, Q2 = 25 and Q3 = 60
Mean = 20, Q1 = 30, Q2 = 20 and Q3 = 60
What is a, b, c for the component in box plot?
Mean, Median, Mode
Q1, Mean, Q2
Q1, Median, Q3
Q1, Q3, Q2
What is the number of sample space of tossing two coins and getting both Head.
0.12
1
2.50
4
Two dice are rolled, let find the chance that the sum is equal to 1.
0.027
0.0027
0.50
0.00
In how many ways a committee consisting of 5 men and 3 women, can be chosen from 9 men and 12 women?
126 ways
220 ways
27720 ways
no answer
Which number cannot be a probability?
0
1
20%
1.5
A die is rolled, find the probability that an even number is obtained?
0.5
0.25
0.125
0
How we explain the zero of correlation coefficient for linear regression?
There is a strong relation between independent and dependent variables.
There is no linear relation between independent and dependent variables.
Cannot use the dataset for predicting the unknown data
No correct answer
Which choice shows the multi-linear regression equation?
y = 0.4 + 0.5x
y = 0.4 + 0.5x1 - 0.6x2
y = 0.4 + 0.5x + 0.6x2 + 0.7x3
there are two corrected choices
Find the predicted value of degree Celsius, if the humidity value is 50.
(define the linear regression as Y = 0.55X – 16.50)
11 degree Celsius
21 degree Celsius
12 degree Celsius
20 degree Celsius
Which model of regression is suitable for this data ?
Linear regression
Multiple linear regression
Polynomial regression
All answers are correct
Which is correct?
Model is a function that takes an input and yields the values we want to predict
We cannot use the different model for fitting the same dataset
Cost function is measure a price of model
Overfitting and Underfitting are good for the model
Which is the tuple declaration in Python?
tuple = {“A”, “B”,”C”}
tuple = “A”,”B”,”C”
tuple = [“A”,”B”,”C”]
tuple = (“A”,”B”,”C”}
How to get the value 4,5,6 in list of
x = [1,2,3,4,5,6,7]
x[3:6]
x[4:7]
x[5:8]
x[:]
What is the output of this code?
b is greater that a
a and b are equal
a is greater than b
No correct answer
What is the output of this code?
1,2,3,4,5,6,7,8,9,10
2,3,4,5,6,7,8,9
3,4,5,6,7,8
No answer
Which code is error?
without error code for all choices
