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exam1

Quiz by hd

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30 questions
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  • 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
    adds new elements
    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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