Question

Q1- Identify each of the following statistics as either descriptive or inferential. For each, give a reason to support your response.

1 The average age of students in our statistics class is 20 years old.

2 The average age of undergraduate students in the CUNY system is 20 years old.

3 Seventy-three percent of sixth-graders have cell-phones.

           

4 The salary of LeBron James is greater than the average salary of his teammates.

           

5 Eighteen of the twenty three eighth-graders in Mr. Robson's algebra class have smart phones.

           

6 Less than 50% of all american households have two televisions.

           

Q2- Classify the following data as nominal, ordinal, interval or ratio. For each, give a reason to support your response.

1   Date of high-school graduation

           

2   The numbers on the Lakers' jerseys

           

3   Ranking of the planets by distance from sun

           

4   Distance of planets from sun

           

5   Height of children in an elementary school

           

6   Waiting number at DMV

           

7   Year at high-school

           

8   Weight of chickens at a poultry farm

           

9   Longitude of stars in the night sky

           

10 Social security number

Answer 1