# exam1

## Quiz by hd

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30 questions

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- Q1Forecasting the weather state usesCategorical targetcelsius targetNumerical targetOrdinal target120s
- Q2How many of the below is a measure of variability? i. mode ii. range iii. coefficient of variation iv. standard deviation1234120s
- Q3Which of the below is not a good example of skewness?Car prices in BursaEducation years taken by individuals in the poorest counties in the worldIndividual income in USAHeight of elder females in Ankara120s
- Q4What is the median of the following set of numbers? { 12, 8, 13, 4, 7, 6, 3, 3, 15, 12, 9 }3789120s
- Q5What 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, 8mean, mode: 7, 4mean, mode: 8, 9mean, mode: 6, 8120s
- Q6If a distribution is exactly normal, the mean is equal tomedianmodemaxvariation120s
- Q7A linear regression analysis with an independent variable ismultiple linear regressionlasso regressionsimple linear regressionlogistic regression120s
- Q8How 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 variance4231120s
- Q9When 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 outliers1302120s
- Q10Categorical data can be expressed as numeric thanks to ....using text miningconverting to dummy variablescleaning anomaliesusing the most common elements120s
- Q11Which of the below is a valid python statement?sprintf("Hello World")printf("Hello World")prind("Hello World")print("Hello World")120s
- Q12h_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?83869289120s
- Q13Which of the below best describes "list append" method's functionality?Adds an element at the specified positionadds new elementsreturns error if the element is not in the listadd new elements as a single element120s
- Q14You 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
- Q15How 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 explain2031120s