WorksheetsDATA ANALYSIS
Total questions: 20
Worksheet time: 20mins
Data analysis
to produce result
nature of data to be used
Used to interpret the findings
development of methods to collect,analyze and interpret data
Nominal data
Do not have a natural order
Blood type one of nominal data
Relate to ranking
Socio economic is call as nominal data
Ordinal data commonly
two different value is meaningful
Temperature one of ordinal data
Has all the properties of an variable
Pulse is ordinal data
Data processing related to
Coding
editing
Amputation
Data entry
Coding helps a researcher to
Less time to enter
Reduce to enter
Help in transformation data
Unable to reserved a memory storage
Benefits to use coding
Classifying information.
Reveal information
Request inappropriate active.
Conceal information
The following are related to capture
use to assure the quality of data enter
process to put responses data
avoiding a bottleneck and extra steps.
Edited data before presenting
Data errors normally detected to minimize errors from
appropriate responses
unrecorded answer
unasked question
inappropriate answer
Why errors should be check?
Ensure accuracy of data
Establish the consistency data
determine the data are complete
Check wrong answer
Imputation related to
Process of statistical replace missing data
process might be happen during coding and editing
It used when errors detected
Its used for improvement of data.
Check digits able to benefit the researcher to
help to detect
transposition errors
single digit missed key
Produce the results
Types of graph that can be used in presenting a result
Bar graphs
Line graphs
Pie chart
Scatter plot
Descriptive statistic to measure central tendency
Range
Mode
Median
Mean
In measure of dispersion
Variance
mode
Standard deviation
Range
Data set shows 4,7,5,9,5. What is the mean of data set.
5
8
6
5
Which is the mode of the data set: 8,8.9,10,10,11
8
11
10
9
The following are normal distribution curve
Bell Shape
Bilateral symmetry
Tails always touch x axis
area under curve total 1.00
Skewness
Left side of the curve called skewed left
Large values will be at right skewed
Small values will be at right skewed
Normal skew presenting perfectly distribution
Normal Kurtosis related
Platykurtic
Mesokurtic
Leprokurtic
Telekurtic
Which are the following the steps to test for normality?
Analyse
Descriptive
Explore
Interprete
