Statistic And Descriptive Statistics

BIOSTATISTICS

1.Explain what is meant by descriptive statistics. (5m)

Descriptive statistic is refer to data analysis that aid in describing, showing or making summary of data features in order to get meaningful data from the raw data itself, but do not to allow us to make a conclusion beyond data that we have analysed, it is just to simply interpret the data in a simpler way. These can be done by using chart, table, graph, narrative or pictures.

There are two ways in which we can describe data: measure of central tendency mode, median, mean measure of variability or dispersion range, quartiles, absolute deviation, variance, standard deviations

2.Explain what is meant by inferential statistics. (5m)

Both descriptive and inferential statistics

Variable Variable is refer to any characteristics that described individual, place, object or event that the the statistician interest of study Quantitative variable Quantitative variable is variable that have value to be described, a measurable quantity that can be count and expressed in numerical.

Qualitative variable Qualitative variable is variable that often represented as a label and categories and value obtained cannot be measure or count, it only can describe the quality or characteristic but not numerical aspect.

Correlation Correlation is statistical technique that can show how strongly the pairs of variables are related with each other and can be determined by correlation coefficient.

Population Population is referred to the set of all individuals, items or data of interest regardless of the size, in which it can be small or large in

Use example whenever necessary. (4m)

5.Compare and discuss the descriptive statistics for bar graph and histogram. (4m)

6.List, describe and compare the three different types of tables. (6m)

7.For each of the following variables, indicate whether it is quantitative or qualitative and specify the measurement scale (nominal, ordinal, interval, ratio) that is employed when taking measurement on each: (6m)

Class standing of the members of this class relative to each other

Admitting diagnosis of patients admitted to a mental health clinic

Weights of babies born in a hospital during a year

Gender of babies born in a hospital during a year

Range of motion of the elbow joint of student enrolled in a university health sciences curriculum

Under-arm temperature of day-old infants born in a hospital

8. Describe the use of correlation and regression in biomedical sciences. Use example whenever necessary. (5m)

Correlation is defined as

9.A study of 500 households in a city revealed that 20 percent had at least secondary school education. Answer the following questions: (6m)

What is the sample in the study?

What is the