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1.8 Smoking habits of UK residents: A survey was conducted to study the smoking habits of UK residents Below is a data matrix displaying a portion of the data collected in this survey. Note that "E" stands for British Pounds Sterling, "cig" stands for cigarettes, and "N/A" refers to a missing component of the data. grossincome Under £2600 £10,400 to £15,600 Above £36,400 1 2 3 sex age marital Female 42 Single Male 44 Single 53 Married Male : : : 1750 Male 40 Single £2600 to £5,200 a) What does each row of the data matrix represent? O a variable O an observation smoke Yes No Yes : Yes amtWeekends 12 cig/day N/A 6 cig/day 8 cig/day amtWeekdays 12 cig/day N/A 6 cig/day : 8 cig/day b) How many participants were included in the survey? c) Identify each variable, determine whether each variable is numerical or categorical. If the variable is numerical, specify continuous or discrete. If the variable is categorical, specify whether the variable is ordinal or not. O The variables are sex (ordinal), age (continuous), marital status (regular categorical), earnings (discrete), whether or not the individual smokes (regular categorical), amount the individual smokes per day on a weekday (discrete), amount the individual smokes per day on a weekend (discrete) O The variables are sex (regular categorical), age (discrete), marital status (regular categorical), earnings (continuous), whether or not the individual smokes (regular categorical), amount the individual smokes per day on a weekday (discrete), amount the individual smokes per day on a weekend (discrete) O The variables are sex (regular categorical), age (discrete), marital status (regular categorical), earnings (ordinal), whether or not the individual smokes (regular categorical), amount the individual smokes per day on a weekday (discrete), amount the individual smokes per day on a weekend (discrete)

1.8 Smoking habits of UK residents: A survey was conducted to study the smoking habits of UK residents Below is a data matrix displaying a portion of the data collected in this survey. Note that "E" stands for British Pounds Sterling, "cig" stands for cigarettes, and "N/A" refers to a missing component of the data. grossincome Under £2600 £10,400 to £15,600 Above £36,400 1 2 3 sex age marital Female 42 Single Male 44 Single 53 Married Male : : : 1750 Male 40 Single £2600 to £5,200 a) What does each row of the data matrix represent? O a variable O an observation smoke Yes No Yes : Yes amtWeekends 12 cig/day N/A 6 cig/day 8 cig/day amtWeekdays 12 cig/day N/A 6 cig/day : 8 cig/day b) How many participants were included in the survey? c) Identify each variable, determine whether each variable is numerical or categorical. If the variable is numerical, specify continuous or discrete. If the variable is categorical, specify whether the variable is ordinal or not. O The variables are sex (ordinal), age (continuous), marital status (regular categorical), earnings (discrete), whether or not the individual smokes (regular categorical), amount the individual smokes per day on a weekday (discrete), amount the individual smokes per day on a weekend (discrete) O The variables are sex (regular categorical), age (discrete), marital status (regular categorical), earnings (continuous), whether or not the individual smokes (regular categorical), amount the individual smokes per day on a weekday (discrete), amount the individual smokes per day on a weekend (discrete) O The variables are sex (regular categorical), age (discrete), marital status (regular categorical), earnings (ordinal), whether or not the individual smokes (regular categorical), amount the individual smokes per day on a weekday (discrete), amount the individual smokes per day on a weekend (discrete)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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1.8 Smoking habits of UK residents: A survey was conducted to study the smoking habits of UK residents. Below is a data matrix displaying a portion of the data collected in this survey. Note that "E" stands for British Pounds Sterling, "cig" stands for cigarettes, and "N/A" refers to a missing component of the data. grossincome Under £2600 £10,400 to £15,600 Above £36,400 1 2 3 : sex Female Male Male : age marital 42 Single 44 Single 53 Married an observation : : 1750 Male 40 Single £2600 to £5,200 a) What does each row of the data matrix represent? O a variable smoke Yes No Yes : Yes amtWeekends 12 cig/day N/A 6 cig/day 8 cig/day amtWeekdays 12 cig/day N/A 6 cig/day : 8 cig/day b) How many participants were included in the survey? c) Identify each variable, determine whether each variable is numerical or categorical. If the variable is numerical, specify continuous or discrete. If the variable is categorical, specify whether the variable is ordinal or not. O The variables are sex (ordinal), age (continuous), marital status (regular categorical), earnings (discrete), whether or not the individual smokes (regular categorical), amount the individual smokes per day on a weekday (discrete), amount the individual smokes per day on a weekend (discrete) O The variables are sex (regular categorical), age (discrete), marital status (regular categorical), earnings (continuous), whether or not the individual smokes (regular categorical), amount the individual smokes per day on a weekday (discrete), amount the individual smokes per day on a weekend (discrete) O The variables are sex (regular categorical), age (discrete), marital status (regular categorical), earnings (ordinal), whether or not the individual smokes (regular categorical), amount the individual smokes per day on a weekday (discrete), amount the individual smokes per day on a weekend (discrete)
Transcribed Image Text:1.8 Smoking habits of UK residents: A survey was conducted to study the smoking habits of UK residents. Below is a data matrix displaying a portion of the data collected in this survey. Note that "E" stands for British Pounds Sterling, "cig" stands for cigarettes, and "N/A" refers to a missing component of the data. grossincome Under £2600 £10,400 to £15,600 Above £36,400 1 2 3 : sex Female Male Male : age marital 42 Single 44 Single 53 Married an observation : : 1750 Male 40 Single £2600 to £5,200 a) What does each row of the data matrix represent? O a variable smoke Yes No Yes : Yes amtWeekends 12 cig/day N/A 6 cig/day 8 cig/day amtWeekdays 12 cig/day N/A 6 cig/day : 8 cig/day b) How many participants were included in the survey? c) Identify each variable, determine whether each variable is numerical or categorical. If the variable is numerical, specify continuous or discrete. If the variable is categorical, specify whether the variable is ordinal or not. O The variables are sex (ordinal), age (continuous), marital status (regular categorical), earnings (discrete), whether or not the individual smokes (regular categorical), amount the individual smokes per day on a weekday (discrete), amount the individual smokes per day on a weekend (discrete) O The variables are sex (regular categorical), age (discrete), marital status (regular categorical), earnings (continuous), whether or not the individual smokes (regular categorical), amount the individual smokes per day on a weekday (discrete), amount the individual smokes per day on a weekend (discrete) O The variables are sex (regular categorical), age (discrete), marital status (regular categorical), earnings (ordinal), whether or not the individual smokes (regular categorical), amount the individual smokes per day on a weekday (discrete), amount the individual smokes per day on a weekend (discrete)
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