Use of Statistics in Data Science

We want to get the cars of red color from the below data set. Which type of

Subsetting should be used?

• Column based Subsetting

• Data based Subsetting

• Row based Subsetting

• None of the Above

Which is a more accurate measure of central tendency when there are outliers in

the data set?

• Mean

• Median

Mean absolute deviation is an identifier of the variability of the data set. Is this a

correct statement?

• Yes

• No

The mean absolute deviation is divided by coefficient of mean absolute deviation to calculate

• Variance

• Median

• Arithmetic Mean

• Coefficient of Variation

In a manufacturing company, the number of employees in unit A is 40, the mean is Rs. 6400 and the number of employees in unit B is 30 with the mean of Rs. 5500 then the combined arithmetic mean is

• 9500

• 8000

• 7014.29

• 6014.29

The mean deviation about the mean for the following data:

5, 6, 7, 8, 6, 9, 13, 12, 15 is:

• 1.5

• 3.2

• 2.89

• 5

The arithmetic Mean of the numerical values of the deviations of items from some

average value is called the

• Standard Deviation

• Range

• Quartile Deviation

• Mean Deviation

What is the primary purpose of calculating the median in a data set?

• To find the average value

• To identify the middle value

• To determine the range

• To measure variability

In statistics, which measure is least affected by extreme values in a data set?

• Mean

• Median

• Standard Deviation

• Mode

If the data set consists of the numbers 2, 4, 4, 4, 5, 5, 7, what is the mode?

• 4

• 5

• 2

• 7