11·what is the difference between descriptive and inferential statistics? (2pts)

Question

11·what is the difference between descriptive and inferential statistics? (2pts) 12. What is the difference between qualitative and quantitative data? 2pts) 13. Give two examples of discreet data, one qualitative and one 14. Below is an example of what type of relationship apts tle in b qu n ative (please abel). ( pts w 7 9. Define the type of study, and the independent and dependent variables in the following examples. (Bpts) a) A researcher compares the difference in hours of sleep freshmen, sophomores,juniors and seniors get each night. Sojots. b) A researcher studies the relationship between hours of sleep and exam performance the next day by varying the number of hours certain students are allowed to sleep. otvanuble lay it Wet 10. Define percentile. (lpts) iman

Explanation / Answer

11.

Discriptive statistic : Statistical procedures that are used to summarize, organize, and simplify data.

Inferential statistics: Techniques that allow us to study samples and then make generalizations about the populations from which the samples were selected

12.

Quantitative data are anything that can be expressed as a number, orquantified.

Examples of quantitative data are scores on achievement tests,number of hours of study, or weight of a subject. These data may berepresented by ordinal, interval or ratio scales and lend themselves to moststatistical manipulation.

Qualitative data cannot be expressed as a number. Data thatrepresent nominal scales such as gender, socieo economic status, religiouspreference are usually considered to be qualitative data.

13.

Discrete data:

1. the number of students in a class (you can't have half a student).

2.Number of students taking this class.

3. Number of people who vote for a particular candidate in an election.

Qualitative Example:

1. Eye colors (variables include: blue, green, brown, hazel).

2.States (variables include: Florida, New Jersey, Washington).

Examples of quantitative data include:

1. A jug of milk holds one gallon.

2. A painting is 14 inches wide and 12 inches long.

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