DATA COLLECTION AND ANALYSIS ASSIGNMENT

Data Collection and Analysis Assignment



Data Collection and Analysis Assignment

Question 1:

In statistics, there is a relationship with numbers, numbers, grouped or not, which have similar characteristics together. There are research related to product prices of the daily diet, height and weight of a group of individuals, employee salaries, degrees of temperature environment, student grades, etc.., which can acquire different values ??by an appropriate unit, which receives the variable name. The numerical representation of the variables is called statistic.

i.

Mean

20.17

Median

18

Mode

19

Max

59

Min

16

Range

43

Lower Quartile

16

Upper Quartile

59

The mean age of the sample is 20.17 years and the mode is 19 years. That is most of the students out of total 16000 students are 19 years of age. The range of the age is 43 with the lower quartile of 16 and upper quartile of 59.

ii.

Measures of central tendency (mean, median and mode) serve as points of reference for interpreting Measures of Central Tendency and Dispersion provides a basis for conducting further tests on the data. The purpose of a measure of central tendency is to summarize in one number the typical value or the most representative of a result set. There are different measures of central tendency. The best known methods to measure the central tendency of the data include arithmetic mean, mode, and the median.

Measures of central tendency (mean, median and mode) help you enter, with a unique number, which is typical of a dataset. The mean is the average value of all data of the whole. The median is the middle value when all data have been arranged in numerical order: exactly half of the data lying above the median and half falling below. The mode is the most common value of all. In a normal distribution , mean, median and mode have identical values (Ott, 2003, pp. 87).

iii.

Band

Frequency

15

0

20

12421

25

1775

30

1120

35

351

40

79

45

59

50

167

55

160

60

3

More

0

Frequency Histogram

A frequency histogram is a graph that is formed on each lifting boxes one of the real limits of each interval, with a height equal to the frequency ab- soluta of each class. The histogram is used to represent data corresponding to the values ??of the vari- continuous quantitative variable (Trochim, 2006, pp. 13). To indicate the continuity of the variable are not left spaces between the bars.

More than 12000 students are between the age of 15 - 20 years and around 2000 students are in the age group of 20 to 25. There no students of age below 15 and above 60 years.

v.

80 % of the students from the sample are part time, while the remaining 20 % are fulltime students.

vi.

The three methods used in the above parts are quite different from each other. The central measures of tendency shows the mean, median, mode of the raw data to conclude some meaningful information from it. The frequency distribution is a tabular statistical data sorted ascending or descending, with the frequency (fi) of each data. Frequency distributions can be for ungrouped data and grouped data or class intervals (Downing, 2003. pp. 47). It indicates that the frequency distribution that displays statistics from the least of them unto the greatest of that set without ...