gs gs119 Data Exploration and Analysis - Basic Statistical Descriptions of Data - Quiz No.2
gs gs119 Data Science Quiz
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Question 1: Which of the following is the most appropriate sequence for the given negatively skewed data diagram?
Mean, mode, median
Mode, median, mean
Mean, median, mode
Mode, mean, median
Question 2: Which of the following empirical relation is valid for moderately skewed data?
mean – mode ≈ 2 X (mean – median)
mean – mode ≈ 3 X (mean – median)
mean – mode ≈ 4 X (mean – median)
mean – mode ≈ mean – median
Question 3: Which of the following is true about the range of a set of values of a data set?
It is the product of the largest and the smallest value
It is the average of the largest and the smallest value
It is the sum of the largest and the smallest value
It is the difference between the largest and the smallest value
Question 4: The data points that partition a data distribution into consecutive groups of equal size are _____
Quantiles
Whiskers
Intervals
Range
Question 5: Which of the following is true about nth q-quantile where 0 < n < q?
It is the value lesser than n/q of the data values
It is the value greater than n/q of the data values
It is the value greater than (q-n)/q of the data values
It is not applicable in case of numeric data
Question 6: The median is also known as _____
2-quantile
3-quantile
4-quantile
5-quantile
Question 7: The 4-quantiles are also known as _____
Percentiles
Quartiles
Quintiles
Octiles
Question 8: Which of the following is true about interquartile range?
It is the distance between first and third quartiles
It is the distance between first and fourth quartiles
It does not measure the spread of the data
It is very sensitive to outliers
Question 9: Which of the following is true about interquartile range of data values 5, 2, 7, 4, 9, 8, 1, 14?
The interquartile range is 5
The interquartile range is 4
The interquartile range is 6
The interquartile range is 3
Question 10: Which of the following is a commonly used threshold measured above the third quartile for identifying outliers?
IQR
1.5 X IQR
0.5 X IQR
0.8 X IQR
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