Week 1 Graded assignment _Question 3 (To Course Support Team)

[goduma...@gmail.com]

Each user rating an App should be continuous variable as It is taking all the values in the range {1,2,3,4,5}.Because each user can give only values 1,2,3,4,5 and in between values like 1.5,2.5 doesn't be taken. 

By the definitions

Continuous Variables:  If there is a possibility of taking all the values in the range then it should be a Continuous variable.

Discrete Variable: If we cannot take all the values in the range then it is a Discrete Variable.

Example 1 : 

Continuous Variable: 

Height assume 150cm is minimum and 152cm is max so in the range (150-152) it is possible to have all values because it can have decimal values as per context.

Similarly Each User Rating an app : 1 is minimum  and 5 is maximum here range is {1,2,3,4,5} so all the possible values can be taken so it sholud be considered as continuous variable as per the definition.

Note: Each user Rating app Range is{1,2,3,4,5} where as Rating of an app range is (1-5) both are different cases.

Example 2:

Discrete Variable:

No. of persons in a family : 10,12,13,14  we can just count them 

Each user rating an app: : We cannot compare with the above example like no. of persons in a family as there we are counting here we are assigning a value which is in range {1,2,3,4,5} which has proper limits with minimum and maximum. So here in range {1,2,3,4,5} user can give all values to an app which is satisfying continuous variable condition.

I would be grateful if course support team help me with proper explanation.

Thank You

[Statistics 1 Support 1]

Hello, 

Though your definitions for continuous and discrete numerical variables are correct, each user rating an app is discrete numerical variable. This is because each user can give only finite values in range of [1,5] that is they can give only 1, 2,3, 4, or 5. As you said if infinite values or all values are possible in a range then it is continuous, but each user rating takes ony 5 possible values in range of [1, 5]. So, it is discrete numerical variable.

Thanks & Regards,

Ram,

Content Support Team