session, the participants should be able to:
11 Describe data using the common . Describe data using the common measures of
2. Describe data in terms of their variability
and skewness; and
3. Determine the most applicable measure of
centraltendency given different...
Measures of CentralTendencyAdvantage of the MODE: can be easily identified through ocular inspection. Disadvantages of the MODE:
does not possess the desired algebraic property of th d t th d i d l b i t f the mean that allows further manipulations. like the median...
* cannot be specified using an equation so can’t be manipulated algebraically
* is less sufficient than the mean
* is less efficient than the mean
* They are measures of centraltendency that divide a group of data into 100 parts
* At least n% of the data lie...
, * The length of a leaf, * Lots more! |
The mean is the only measure of centraltendency where the sum of the deviations of each value from the mean is always zero.
Type of Variable | Best measure of centraltendency |
Nominal | Mode |
Ordinal | Median |
Interval/Ratio (not skewed) | Mean...
median is the mean of the two middle numbers. Thus, the median of the numbers 2, 4, 7, 12 is (4+7)/2 = 5.5.
The mode is the most frequently occurring score in a distribution and is used as a measure of centraltendency. The advantage of the mode as a measure of centraltendency...
distribution, unrealistic, errors of centraltendency.
5. Critical Incidents Method: The approach is focused on certain critical behaviors of employee that makes all the difference in the performance. Supervisors as and when they occur record such incidents. Advantages – Evaluations are based on actual job...
tendency and explain the difference between them?
Measures of CentralTendency:
The term centraltendency refers to the "middle" value or perhaps a typical value of the data, and is measured using the mean, median, or mode. Each of these measures is calculated differently, and the one...
research methods to study behavior. Three of the main research methods used are:
• Case study
• Correlational study
A. Discuss one advantage of each research method listed above.
B. Discuss one disadvantage of each research method listed above.
Pretend you are a psychologist who...
large number of employees.
b) Simplest to use; provides a quantitative rating for each employee.
Disadvantages of graphic rating scale:
a) Standards may be unclear; halo effect, centraltendency, leniency, bias can also be problems.
b) Different supervisors will use the same graphic scales...
easy to understand. (ii) It is the only measure of centraltendency which can be used with nominal data. Disadvantages of the mode: Unfortunately, the disadvantages outweigh these benefits for any serious statistical use. (i) The mode may easily be unrepresentative of the bulk of the data, and so...
between quantitative and qualitative data
Know what is meant by the term measures of centraltendency and explain what they tell us
Define mean, median and mode
Give an advantage and disadvantage of
mean median and mode
know what is meant by the term measure of dispersion
and more likely explanation: she finds statistics boring.
Psychologists use many different methods for conducting research. Each method has advantages and disadvantages that make it suitable for certain situations and unsuitable for others
Descriptive or Correlational...
, mode and midrange exist. Each has advantages and disadvantages. For this problem statement, the measures of mean and median were used. The analysis starts by looking at descriptive statistics shows the relative centraltendency for the team salaries. The histogram shows that the majority of the data...
tendency: the value in a set of numbers that falls exactly halfway between the lowest and the highest values.
* Mode: third measure of centraltendency: the most frequent score or value in a set of numbers
* Variability: in a set of numbers, how widely dispersed the values are from each other...
tabulated and analysed usingmeasures of centraltendency, standard deviation, and interquartile range. The resulting characteristics of the data are summarised in this report.
3.0 Summary of data
. The data collected in the study were analysed and summarisedin table 1.
Important Advantages and Disadvantages of Appraisal Tools
Graphic rating scale BARS
Simple to use; provides a quantitative rating for each employee. Provides behavioral “anchors.” BARS is very accurate.
Standards may be unclear; halo...
. They weigh up the advantages and disadvantages of each design and make their decision. Use the textbook to find out about the three main methods of using participants, called designs.
Loftus & Palmer (1974...
is the Mean, Median and Modal income per person in the UK?
2. What are the advantages and disadvantages of eachmeasure you calculated in 1.
Which measure of ‘average’ income would you recommend as the most appropriate
Review and Conclusions of Results
Using household income...