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Top 50 data Science Interview Questions
What values are termed as an outlier in a box plot?
Any value which is more than upper cap and less than the lower cap will fall under the definition of an outlier
Which of the following divides the group of data into four subgroups? a. Median b. Mean c. Quartile d. Percentile
Quartile divides a group of the dataset into four subgroups
A chance variation in an observational process is a. Dispersion b. Measurement error c. Random error d. Instrument error
Random error
Given X1=6,X2=5,X3=4,X4=3, then ∑4i=1 Xi equals?
18
Consider the following data set and create a linear regression model in Python X = 3,4,5,6,7 Y = 15,22,25,33,40
from sklearn import linear_model import numpy as np
xl = [3,4,5,6,7]
x = np.asarray(xl).reshape(-1, 1)
y = [15,22,25,33,40]
lm = linear_model.LinearRegression()
lm.fit(x, y)
print(lm.intercept_)
print(lm.coef_[0])
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