3. R has a built-in character vector of US State names, state.name. Use this cha

Question

3. R has a built-in character vector of US State names, state.name. Use this character vector and R's character functions to answer the following questions.Show R code

(a) List all the US State names that are more than one word. How many are there?

(b) What is the longest US State name(s) (including spaces) and how long is it?

(c) What is the longest single word US State name and how long is it?

(d) List all the US State names, where all of the upper and lower case “a"s are replaced with a capital “Z".

Explanation / Answer

Answer:

Data sets related to the states of the USA

Details:

state.area:

this vector had numeric area as state areas in square miles.

state.center:

list with components named x and y approxmate geographic center of each state

state.division:

factor giving state divisions

state.name:

character vector with state full names.

state.region:

factor giving the region

state.x77:

matrix with 50 rows and 8 columns for below columns

population: estimated population by 1st july 1975

Income: per capita Income by 1974

illiteracy: illiteracy by 1970 in %.

life exp: life expectancy for 1969-71

murder:murder aand non-negligent manslaughter per 100000population by 1976.

frost:

Mean number of days with minimum temperature feezing 1931-1960

Area:

land area in square miles

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