chechemuaen7

2022-03-19

At the main Al Mawalih road junction, during a specific regular time, chosen between 6:00am and 6:00pm, the STAT2101 project group collected data on the number of passengers per car. Data were collected on a sample of 100 cars about different types of cars, of which 50 were driven by female drivers, while 80 were driving to a shopping mall. Which of the following is correct about the level of measurement for the variables under this study?

a. The variable "driver's gender" is of a ratio measurement level.

b. The variable "type of car" is of an interval measurement level.

c. The variable "driving to a shopping mall or not" is of an ordinal measurement level.

d. The variable "number of passengers per car" is of a ratio measurement level.

a. The variable "driver's gender" is of a ratio measurement level.

b. The variable "type of car" is of an interval measurement level.

c. The variable "driving to a shopping mall or not" is of an ordinal measurement level.

d. The variable "number of passengers per car" is of a ratio measurement level.

Talan Kent

Beginner2022-03-20Added 4 answers

The interval and ratio level of measurements are used for quantitative variables (variables that can be measured numerically) and nominal and ordinal level of measurements are used for categorical variables (variables which can not be measured numerically and have categories).

Also, when categories can be arranged then we use ordinal level of measurements.

a) The variable ' driver's gender' is categorical with categories Male and Female. So this option is not correct choice as ratio level of measurement is used for quantitative variables.

b) The variable ' type of car ' is also a categorical variable. So this option is not true.

c) The variable ' driving to mall or not' is a categorical variable with categories Yes or No.

As these categories can not be arranged in any order so the level of measurement is nominal not ordinal. So this option is not true.

d) The variable ' number of passengers per car' is a quantitative variable. So this option is true.

Therefore, the correct choice is d

Also, when categories can be arranged then we use ordinal level of measurements.

a) The variable ' driver's gender' is categorical with categories Male and Female. So this option is not correct choice as ratio level of measurement is used for quantitative variables.

b) The variable ' type of car ' is also a categorical variable. So this option is not true.

c) The variable ' driving to mall or not' is a categorical variable with categories Yes or No.

As these categories can not be arranged in any order so the level of measurement is nominal not ordinal. So this option is not true.

d) The variable ' number of passengers per car' is a quantitative variable. So this option is true.

Therefore, the correct choice is d

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