statistics 1
Research and statistics for managerial decision making Assignment 1
Mohammed Ahmed Ali 0170026
1.1 Four different beverages are sold at a fast food restaurant: soft drinks, tea, coffee, and bottled water.
Explain why the type of beverage sold is an example of a categorical variable
Explain why the type of beverage sold is an example of a nominal scaled variable
Categorical variables take values that fall into one or more categories. "Categorical variable is defined as data divided in categories as yes or no"(Chapter 1 Statistics for Manager 7th Edition). As there are 4 different types of drinks, they would all fall into their own categories rather than numerical.
A nominal scale classifies data into distinct categories in which no ranking is implied. The type of drinks sold is an example of a nominally scaled variable as there are no rankings involved
1.2 U.S. businesses are listed by size: small, medium, and large. Explain why business size is an example of an ordinal scaled variable
An ordinal scale classifies data into distinct categories in which ranking is implied. Ordinal scaling is a stronger form of measurement than nominal scaling because an observed value classified into one category possesses more of a property than does an observed value classified into another category.
1.3 The time it takes to download a video from the Internet is measured. Explain why the download time is a continuous numerical variable Explain why the download time is a ratio scaled variable
Measurement is the PROCESS whereby a feature is evaluated. Those features can be things like height or weight, or they could be more psychological in nature, like intelligence or anxiety levels. In
Mohammed Ahmed Ali 0170026
1.1 Four different beverages are sold at a fast food restaurant: soft drinks, tea, coffee, and bottled water.
Explain why the type of beverage sold is an example of a categorical variable
Explain why the type of beverage sold is an example of a nominal scaled variable
Categorical variables take values that fall into one or more categories. "Categorical variable is defined as data divided in categories as yes or no"(Chapter 1 Statistics for Manager 7th Edition). As there are 4 different types of drinks, they would all fall into their own categories rather than numerical.
A nominal scale classifies data into distinct categories in which no ranking is implied. The type of drinks sold is an example of a nominally scaled variable as there are no rankings involved
1.2 U.S. businesses are listed by size: small, medium, and large. Explain why business size is an example of an ordinal scaled variable
An ordinal scale classifies data into distinct categories in which ranking is implied. Ordinal scaling is a stronger form of measurement than nominal scaling because an observed value classified into one category possesses more of a property than does an observed value classified into another category.
1.3 The time it takes to download a video from the Internet is measured. Explain why the download time is a continuous numerical variable Explain why the download time is a ratio scaled variable
Measurement is the PROCESS whereby a feature is evaluated. Those features can be things like height or weight, or they could be more psychological in nature, like intelligence or anxiety levels. In