exam1

Quiz by hd

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30 questions
• Q1
Forecasting the weather state uses
Categorical target
celsius target
Numerical target
Ordinal target
120s
• Q2
How many of the below is a measure of variability? i. mode ii. range iii. coefficient of variation iv. standard deviation
1
2
3
4
120s
• Q3
Which of the below is not a good example of skewness?
Car prices in Bursa
Education years taken by individuals in the poorest counties in the world
Individual income in USA
Height of elder females in Ankara
120s
• Q4
What is the median of the following set of numbers? { 12, 8, 13, 4, 7, 6, 3, 3, 15, 12, 9 }
3
7
8
9
120s
• Q5
What is the mean and mode of the following set of numbers? { 4, 9, 8, 8, 2, 16, 4, 4, 8, 9, 6, 8 }
mean, mode: 7, 8
mean, mode: 7, 4
mean, mode: 8, 9
mean, mode: 6, 8
120s
• Q6
If a distribution is exactly normal, the mean is equal to
median
mode
max
variation
120s
• Q7
A linear regression analysis with an independent variable is
multiple linear regression
lasso regression
simple linear regression
logistic regression
120s
• Q8
How many of the below is not an assumption of regression? i. linearity ii. independence of errors iii. normality of errors iv. equal variance v. nominal inputs vi. narrow variance
4
2
3
1
120s
• Q9
When an important variable is not available, another variable can try to explain it wrongly. It is omitted variable bias. How many of the below may be a reliable way to catch such a problem? i. checking the signs of the variables ii. checking the size of the coefficients of the variables iii. cleaning the outliers
1
3
0
2
120s
• Q10
Categorical data can be expressed as numeric thanks to ....
using text mining
converting to dummy variables
cleaning anomalies
using the most common elements
120s
• Q11
Which of the below is a valid python statement?
sprintf("Hello World")
printf("Hello World")
prind("Hello World")
print("Hello World")
120s
• Q12
h_1 = 1.60; w_1 = 73; h_2 = 1.80; w_2 = XXXX; BMI_1 = w_1 / ( h_1 * h_1 ); BMI_2 = w_2 / ( h_2 * h_2 ); Which of the below XXXX satisfies above BMI_1 = BMI_2 condition?
83
86
92
89
120s
• Q13
Which of the below best describes "list append" method's functionality?
Adds an element at the specified position
returns error if the element is not in the list
add new elements as a single element
120s
• Q14
You want jupyter notebook to show all the data instances while displaying data. Which code will you use?
pd.set_option('display.max_colwidth', -1)
pd.set_option('max_info_columns', 199)
pd.set_option("display.max.rows", None)
pd.set_option("display.max.columns", None)
120s
• Q15
How many of the below statements are correct? i. Tree can only split the data at a node into two groups ii. Variables for splits are chosen based on potential information gain iii. Trees are easy to explain
2
0
3
1
120s

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