Frequency distribution normal distribution mean median mode

What is the purpose of developing a frequency distribution? What is the relationship between the relative frequency and the cumulative frequency? Could a frequency distribution contain qualitative data? Why?

Describe the properties of a normal distribution. Why are there infinite possible normal distributions? Why should one assume that sample data represents a population distribution?

Does all statistical data have a mean, median, or mode? Why? When is the mean the best measure of central tendency? When is the median the best measure of central tendency?

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What is the purpose of developing a frequency distribution? What is the relationship between the relative frequency and the cumulative frequency? Could a frequency distribution contain qualitative data? Why?

The frequency distribution gives you a "count" for each category or value. For instance, in a paper I was just writing, I needed to show the reader how many participants worked for each of the four kinds of firms in the study. A bar graph in Excel is a frequency distribution, showing how much in each bar (if you are familiar with this function). It can tell you how many workers are making below $20,000, between $20,000 and $40,000, and above $40,000 by sorting the group into these ranges.

Relative frequency is the count versus the total. So, for my study, what percent of the participants worked for Auditing firms? 27% of the total (count of 45). That is the relative frequency. Here is the relative frequency for wages:

Wages below $20,000.................................45%
Wages between $20,000 and $40,000.....20%
Wages over ...

Solution Summary

Your tutorial is 571 words plus two references. Two examples are given, one for reporting participants by firm and one for reporting salaries.

Please explain how to answer this question. I have a frequencydistribution table that appears like this:
x f
6 1
5 2
4 2
3 2
2 2
1 5
mean (to 2 decimal points) is _____
median is _____
mode is _____
also i tried to figure the mean, median and mode for

What is the purpose of developing a frequencydistribution? What is the relationship between the relative frequency and the cumulative frequency? Could a frequencydistribution contain qualitative data? Why?
Describe the properties of a normaldistribution. Why are there infinite possible normaldistributions? Why should one

For the set of data below construct a grouped frequencydistribution that also contains the real limits of each interval, the midpoint of each interval, the cumulative frequency, the mean, median, mode, standard deviation, variance and relative frequency.
45,48,49,52,53,54,58,59,60,61,61,61,64,69,70,70,71,72,74,78

Using Excel, prepare a frequencydistribution from the data you've been collecting.
Calculate the Standard Deviation of your data.
Is this a normaldistribution?
What are the implications?

One question on a student survey asks: In a typical week, how many times do you eat at a fast food restaurant? The following frequencydistribution table summarizes the results for a sample n = 20 students.
Number of times per week f
__________________________________
5 or more

For the following data set, indicate whether the shape of the distribution is normal, positively skewed, or negatively skewed. Provide evidence for your answer by calculating the mean, mode, and median.
Hours spent watching TV in a week for a sample of children ages 1 to 6 (n=12)
5, 8, 4, 2, 15, 14, 10, 0, 5, 18, 4, 5

•With included given data which is number of hours worked per day for ten days.
Data: 4,2,4,2,4,0,3,2,1,1
•Create a frequencydistribution table for your data. You can use Excel or Word.
•Calculate the standard deviation.
•Calculate the variance.
•Is this a normaldistribution? How do you know?
•What are the i