In the precip data set, find all the cities with an average annual rainfall exceeding 50 inches.

INSTRUCTIONS TO CANDIDATES

ANSWER ALL QUESTIONS

Q1: The Arbuthnot (HistData) data set contains information on the number of Male and Female births in London from 1629 to 1710. Determine if there was ever a year with more female births and vice-versa.

 

Q2: In the precip data set, find all the cities with an average annual rainfall exceeding 50 inches. For the precip data set, we can find the mean and the 25%-trimmed mean. Are any values in the data set more than 1.5 times (a) above the mean, and (b) above the trimmed mean?

 

 

 

Q3: Suppose monthly sales (in 10,000s) of CDs were

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 79 74 161 127 133 210 99 143 249 249 368 302

 

Enter the data into a data vector . Through indexing, form two data vectors: one containing the months with 31 days (manually punching the days), the other the remaining months. Compare the means of these two data vectors.

 

Q4. Consider the Air:Passengers Database in R and answer the following:

A) What were the most popular months to fly?

B) Was there an increase in international travel over time?

C) Find the difference between air travelers in 1960 versus 1950.

 

 

Q5. Refer to the Cardio Datset

A) Import the Cardio Dataset and look for its head.

B) Find out the total no of rows and cols. Also, Find out the names of the columns

C) Find out any Null value in the dataset.

D) Find out the average income of the customers using Cardio fitness machine/product

E) Find out the number of males and females using the machine/product

F) Which product is sold maximum (TM195 TM498 TM798)?

G) Find out the max years of education of the person using product.

 

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