All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source. 
SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE: 
Use statistical methods to analyse data 
SAQA US ID  UNIT STANDARD TITLE  
262538  Use statistical methods to analyse data  
ORIGINATOR  
SGB Statistics  
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY  
  
FIELD  SUBFIELD  
Field 10  Physical, Mathematical, Computer and Life Sciences  Mathematical Sciences  
ABET BAND  UNIT STANDARD TYPE  PRE2009 NQF LEVEL  NQF LEVEL  CREDITS 
Undefined  Regular  Level 5  Level TBA: Pre2009 was L5  12 
REGISTRATION STATUS  REGISTRATION START DATE  REGISTRATION END DATE  SAQA DECISION NUMBER  
Passed the End Date  Status was "Reregistered" 
20180701  20230630  SAQA 06120/18  
LAST DATE FOR ENROLMENT  LAST DATE FOR ACHIEVEMENT  
20240630  20270630 
In all of the tables in this document, both the pre2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre2009 levels unless specifically stated otherwise. 
This unit standard does not replace any other unit standard and is not replaced by any other unit standard. 
PURPOSE OF THE UNIT STANDARD 
The skills, values and knowledge reflected in this unit standard are required by people in the field of statistics. Learners would be able to contribute to a quality hierarchy of skills required to provide quality services in statistics by using statistical methods to analyze data.
A person credited with this unit standard is able to: 
LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
UNIT STANDARD RANGE 
N/A 
Specific Outcomes and Assessment Criteria: 
SPECIFIC OUTCOME 1 
Use graphical methods to explore and present data. 
ASSESSMENT CRITERIA 
ASSESSMENT CRITERION 1 
Graphical and tabular representations are produced to explore data in view of the purpose of the investigation. 
ASSESSMENT CRITERION RANGE 
Representations includes but are not limited to bar charts, box plots, stemandleaf plots, dot plots and histograms. 
ASSESSMENT CRITERION 2 
Graphical and tabular representations are interpreted in order to draw preliminary conclusions. 
ASSESSMENT CRITERION 3 
Graphical and tabular representations are used to detect outliers in the data. 
ASSESSMENT CRITERION 4 
Graphical and tabular representations are used to present results. 
SPECIFIC OUTCOME 2 
Calculate and interpret sample statistics. 
ASSESSMENT CRITERIA 
ASSESSMENT CRITERION 1 
Different and appropriate numerical summary statistics are calculated to explore the behaviour of the data. 
ASSESSMENT CRITERION RANGE 
Numerical summary statistics include but are not limited to the mean, median, proportion, variance, standard deviation and coefficient of variation. 
ASSESSMENT CRITERION 2 
The calculated values of summary statistics are interpreted in terms of the survey objectives. 
ASSESSMENT CRITERION 3 
A numerical summary statistic is selected in order to make comparison between data. 
ASSESSMENT CRITERION 4 
The limitations of the summary statistics are explained in order to assist their interpretation. 
ASSESSMENT CRITERION 5 
Pearson's product moment correlation coefficient is calculated to examine the strength of relationship between variables. 
SPECIFIC OUTCOME 3 
Fit and interpret linear regression models. 
ASSESSMENT CRITERIA 
ASSESSMENT CRITERION 1 
A scatter plot is constructed using a computer software to explore the relationship between variables. 
ASSESSMENT CRITERION 2 
A scatter plot is interpreted in order to decide whether a linear relationship exists between variables. 
ASSESSMENT CRITERION 3 
Least squares estimates are calculated using computer software in order to fit a regression line. 
ASSESSMENT CRITERION 4 
Residual analysis is performed to determine validity of the normality assumption. 
SPECIFIC OUTCOME 4 
Perform chisquare tests. 
ASSESSMENT CRITERIA 
ASSESSMENT CRITERION 1 
Appropriate null and alternative hypotheses are stated for a given problem. 
ASSESSMENT CRITERION 2 
Data are organized into a contingency table to prepare for a chisquare test. 
ASSESSMENT CRITERION 3 
A chisquare test is performed using computer software to test for independence or homogeneity. 
ASSESSMENT CRITERION 4 
A pvalue from the test is interpreted in order to draw conclusions about the study problem. 
ASSESSMENT CRITERION 5 
Assumptions of the chisquare test are stated in order to evaluate the validity of the test. 
SPECIFIC OUTCOME 5 
Perform nonparametric tests. 
ASSESSMENT CRITERIA 
ASSESSMENT CRITERION 1 
Appropriate nonparametric test is selected and performed for testing a hypothesis. 
ASSESSMENT CRITERION 2 
The limitations of the specific nonparametric test are discussed in order to assess the validity of the test. 
ASSESSMENT CRITERION 3 
The assumptions of a nonparametric test are stated so as to make correct use of the test. 
ASSESSMENT CRITERION 4 
Nonparametric tests are compared to facilitate choice of an appropriate test for use in a given context. 
ASSESSMENT CRITERION 5 
Spearman's rank correlation coefficient is calculated to examine the strength of relationship between variables. 
UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
The assessment will be governed by the policies and guidelines of the relevant Education and Training Quality Assurer (ETQA) that has jurisdiction over this field of learning.
The assessor will (at the very least) be accredited and have a relevant qualification and be a subject matter expert in this learning area and at least have 3 years experience in the skills specific area, post qualification. The learner can be assessed against this unit standard to obtain credits or as part of an integrated assessment for a qualification. 
UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
Names, functions and locations of:
Purpose of processes and procedures of: Attributes, properties, characteristics related to: Cause and effect, implications of: Procedures and techniques: Regulations, legislation, agreements, policies: Theory, rules, laws, principles: Relationships, systems: 
UNIT STANDARD DEVELOPMENTAL OUTCOME 
N/A 
UNIT STANDARD LINKAGES 
N/A 
Critical Crossfield Outcomes (CCFO): 
UNIT STANDARD CCFO IDENTIFYING 
Identifying and solving problems in which responses display that responsible decisions using critical and creative thinking have been made when:

UNIT STANDARD CCFO WORKING 
Working effectively with others as a member of a team, group, organisation, and community during:

UNIT STANDARD CCFO ORGANISING 
Organising and managing oneself and one's activities responsibly and effectively when:

UNIT STANDARD CCFO COLLECTING 
Collecting, analysing, organising and critically evaluating information to better understand and explain:

UNIT STANDARD CCFO COMMUNICATING 
Communicating effectively using visual, mathematical and/or language skills in the modes of oral and/or written persuasion when:

UNIT STANDARD CCFO SCIENCE 
Using science and technology effectively and critically, showing responsibility towards the environment and health of others when:

UNIT STANDARD CCFO DEMONSTRATING 
Demonstrating an understanding of the world as a set of related systems by recognising that problemsolving contexts do not exist in isolation when:

UNIT STANDARD ASSESSOR CRITERIA 
N/A 
REREGISTRATION HISTORY 
As per the SAQA Board decision/s at that time, this unit standard was Reregistered in 2012; 2015. 
UNIT STANDARD NOTES 
N/A 
QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
ID  QUALIFICATION TITLE  PRE2009 NQF LEVEL  NQF LEVEL  STATUS  END DATE  PRIMARY OR DELEGATED QA FUNCTIONARY  
Core  65649  National Certificate: Official Statistics  Level 5  Level TBA: Pre2009 was L5  Passed the End Date  Status was "Reregistered" 
20230630  PSETA 
PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: 
This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here. 
NONE 
All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source. 