Practice Exercise 1: Central Tendency

Directions: Use the Frequencies option in SPSS to answer the questions based on the following scenario.

Scenario:

A teacher asked his students how much time they spent studying for their statistics exam.

The results (in minutes) were:

222 161 239 135 209 179 222 201 228 222 235 228 179 47 238 150 99 201

Questions:

1. What is the value of n?
2. What is mean?
3. What is the median?
4. What is the mode?
5. Was the median equal to one of the exam scores that was included in the data? Why.
6. For this example, which measure of central tendency would be the most appropriate measure to report? Why.
7. What is the standard abbreviation for the mean when reporting the findings in an article?
8. What is a standard abbreviation for the median when reporting the findings in an article?
9. Write a statement as it might appear in an article that reports the measures of central tendency.

Assignment #1: Descriptive Statistics

Directions: Use the Frequencies option in SPSS to answer each of the questions based on the following scenario.

Scenario:

A superintendent of a school district needed to present some demographic data based on the schools within the district. One item that the superintendent had to present was the percent of students who received free or reduced lunch (a commonly used proxy for socio-economic status). The following percents were reported for the 40 schools in the district:

58 92 5 8 72 96 69 74 83 53 88 96 90 57 76 45 54 97 76 33 89 27 74 44 15 28 93 20 43 70 27 85 65 40 18 20 86 51 26 78 Questions:

1. What is the sample size for this analysis?
2. What is mean percent of students receiving free or reduced lunch for this district?
3. What is the median percent of students receiving free or reduced lunch for this district?
4. What was the lowest percent of students receiving free or reduced lunch for this district?
5. What was the highest percent of students receiving free or reduced lunch for this district?
6. What is the value of the range?
7. What is the value of the standard deviation?
8. What is the value of the skewness statistic?
9. What are the values of the 25 ^th , 50 ^th , and 75 ^th percentiles?
10. Present the results as they might appear in an article. This must include a table and narrative statement that provides a thorough description of the central tendency and distribution of the percent of students receiving free or reduced lunch for this district.

Price: $13.11

Solution: The downloadable solution consists of 5 pages, 811 words and 2 charts.
Deliverable: Word Document