Descriptive Statistics Purpose for Measuring Central Tendency

1. Explain the general purpose for measuring central tendency?

2. Explain what is meant by each of the following statements:
a. The mean is the balance point of the distribution.
b. The median is the midpoint of the distribution.

3. Identify the circumstances in which the median rather than the mean is the preferred measure of central tendency.

4. Under what circumstances will the mean, the median, and the mode all have the same value?
X f cf c%
10 1
9 3
8 7
7 6
6 2
5 1

5. Under what circumstances is the mode the preferred measure of central tendency?
10. Find the mean, median, and mode for the set of scores in the following frequency distribution table:
(See attached)

23. The following frequency distribution summarizes the number of absences for each student in a class of n=20:

a. Find the mode for this distribution.
b. Find the median number of absences for this class.
c. Explain why you cannot compute the mean number of absences using the data provided in the table.

15. for the following score: 1, 0, 4, 1,1,5
a. calculate the mean. (note that the value of the mean does not depend on whether the set of scores is considered to be sample or a population.)
b. Find the deviation for each score, and check that the deviations sum to zero.
c. Square each deviation and compute SS. (again note that the value SS is independent of whether the set of scores is a sample or a population.)

23. Calculate SS, variance, and standard deviation for the following population of N=6 scores: 11,0,8,2,4,5. (Note: the definitional formula for SS works well with these scores)

Number of Absence(X) f
5 or more 3
4 4
3 3
2 6
1 3
0 1

1. What is the main difference between descriptive and inferential statistics. Give a brief example of each.
2. Under what circumstances is the mean the best measure of centraltendency? When is the median the best measure? Give some examples of applications to back up your thoughts.

Calculate the measures of centraltendency, dispersion, and skew for your data. Display your descriptive statistical data using graphic and tabular techniques.
* Frequency distribution
* Histogram
Based on your skew value and histogram, discuss the best measures of centraltendency and dispersion of your data. Justify you

I need your help to examine the measures of centraltendency and dispersion of this data. Then display your descriptive statistical data using graphic and tabular techniques. finally, explain the data in terms of your display. I am not sure how to tackle this problem. Could you also explain the term centraltendency and dispersi

Calculate the measures of centraltendency, dispersion, and skew for your data.
Prepare you paper examining the data you have collected, and drawing conclusions based on your findings. In your paper, be sure to include the following:
a. Data analysis using descriptivestatistics
1) Calculate the measures of centra

A) SPSS and Data Summary: From the dataset attach, select any two quantitative variables. What is the name of your two quantitative variables you will be analyzing? Use SPSS to compute summary (descriptive) statistics, including measures of centraltendency mean, median, mode and numerical measures variance and standard devia

Using the Cheerio-Paste data
1. Show three measures of centraltendencyfor the dependent variable.
2. Is this distribution skewed? If so, in what direction? Explain your answer.
3. Why would you NOT attempt to determine the centraltendency of the independent variables?
4. Determine the mean scores for men versus

The formula for the ratio is the mileage that 14 students drive to work out of 20 students.
Compute the centraltendency (mean, median, mode) and dispersion (range, variance, standard deviation).
Mileages
1.5
10
2
1
55
1.88
5
20
20
35
40
17
9
35

Compute descriptivestatisticsfor the number of brothers and sisters (variable sibs), years of education (variable educ), and hours worked last week (variable hrs1).
Obtain histograms for the variables as well.
For each variable, compare the values of the different measures of centraltendency (Mean, Median, Mode). Indi

See attached file.
Assume you are researching about housing in a neighborhood encompassed by 5 townships in the attached Real Estate Data Set (Excel). Evaluate if the distance from center of town the homes are located creates a positive, negative or neutral change in the price of the home.
Data analysis using descriptive