Essays on Frequency Distribution

What is statistics?

Statistics is a scientific approach that deals with a range of procedures for collecting, gathering, organizing, summarizing, presenting, and analyzing data and making inferences to aid in finding solutions to problems (Jani, 2014).

Contrast between qualitative and quantitative data

Quantitative data is that which can be measured and reported numerically (Brown & Saunders, 2008). For instance, the marks scored by students in a test, the GDP of countries, among other examples. Quantitative data can be either discrete or continues. Continuous data can take any number hence includes decimal points. For example, the distance between two towns, the height of students in a class, among others. Discrete ...

Analysis, Interpretation and Presentation of Data

Background of the Study In this study, a researcher measured the performance of students before and after an 8-week Moodle based tuition. The study was formed of 25 undergraduate students,who had to be enrolled in the final year of the degree programme. The effectiveness of Moodle based tuition was considered by many previous researches. The researchers from the University of Patras studied students’ performance and practices, while using the Moodle system in their learning environment. 117 students were involved in this study. The methodology of the study was a problem solving course. The results of the study were ...

1. Frequency Distribution Table (Mathway) 2. Mean Relative Frequency= ∑fM∑f= 143821 = 68.50 (Mathway) Mean of all Data = ∑xn= 1484.921 = 70.710 The two values are different because in the first method, the midpoint of every class produces an average value of that class. The sum of the midpoints differ from the sum of all values, and as such they will have different mean values since both will be divided by the total frequency. 3. Chebyshev’s Rule 80 %= 0.8 = 1- [1/(k^2)]; k = square root of (1/0.2) = 2.236 deviation from the mean=k x standard deviation=2.236 x 29.285=65.483

Lower ...

Descriptive statistics refer to the numbers that are used in summarizing the descriptive data. In this case, the data refers to the raw information that has been collected in the field. Once the data has been collected, it is important for the user of the information to analyze in order to be able to interpret it and make sense of the information that has been collected. Thus, the first step in any statistic problem is to make sense of the raw information that has been collected. For a decision to be made, evidence has to be prepared in such ...

Statistics can be defined as the science of learning from data, measuring, controlling, as well as communicating uncertainty. Statistics therefore offers the best navigation essential to control the course of societal and scientific advances (Beri, 2005). Statistical methods and thinking are applied by statisticians to a variety of social, scientific and business models in subjects such as economics, marketing, astronomy, education among others. The techniques used in interpreting statistical data are widely used in making social, political, economic and political decisions. Qualitative data in statistics is used to describe variables who have a non-numeric format. These types of variables ...