Full names of ss

Full names of ss.			Scores of pre-test		Scores of post-test
1	Abduraupova Nozima	18		22
2	Avazxonova Ruqiya	22		25
3	Abduqodirov Abubakir	16		19
4	Abdumannonov Abduvoris	18		21
5	Abdullayeva O’gilposhsha	22		24
6	Abdusattorova Xakima	23		25
7	Erkinjonova Nafosat	24		22
8	Jo’rayeva Mo’mina	20		20
9	Jalilov Abdurahmon	17		19
10	Jamolova Mohisa	23		25
11	Fahriddinova Soliha	26		28
12	Ilyosova Marjona	24		27
13	Normatova Muyassar	25		27
14	Karimova Muxlisa	21		24
15	Muhammadova Maxbuba	21		25
16	Mahkamov Kamollidin	25		27

Table 1. The results of pre-test and post-test in group 8 “A”
Reminder: A pre/post-test should be designed to measure the amount of learning a student has acquired in a specific subject. To do this, questions concerning all of the topics covered during a semester must appear on the test. When grading the tests, the teacher assigns a numerical score to both the pre-test and the post-test.

• 
  As a student, each of you had to conduct a pre-test in the groups distributed to you before starting your BMA (Bitiruv malakaviy amaliyot) and of course the posttest after the internship (which lasted two months).
  
• 
  Once students are assessed, reviewing and comparing outcome statistics is important in the education system.
  

Informative Section

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  The most commonly used statistic is the average, a.k.a. finding where the middle of the data lies. There are three ways to measure the average: the mean, median, and mode. 
  
• 
  Why three ways? Good question. Each will give you a different way of looking at the numbers; depending on the question you're trying to answer (or the argument you're trying to make), any of the three could prove the most useful.
  
• 
  The mean is the most commonly used measure of finding the average. (In fact, in everyday language, people often use the word "average" simply to mean, um, "mean"). Finding the mean is simple: just add up all the numbers in a data set and divide by the number of data entries.
  

• 
  The median is the middle number in a data set. However, the data must be in numerical order (least to greatest or greatest to least) before finding this average. If the middle number lies between two numbers, find the mean of those two numbers (add them together and divide by 2).
  

• 
  The mode is probably the least common way of finding the average, and in most cases is the least useful. To find the mode, just look for the number that occurs the most. There can be more than one mode or none at all.
  

• 
  Finally, there is the range. The range is NOT a measure of the average; however, it is often taught along with averages because it's another helpful way to measure a set of data. The range measures the "spread" of the data, how far apart the smallest and largest values are. To find the range, subtract the smallest value in the dataset from the largest.
  

Let’s focus on examples Evan L	52
Nicole S	50
Pamela A	47
Chad O	44
Erin A	39
Jake P	38
Niecy N	36
Kate G	32

Now, let's find the three averages and the range for the contestants' scores.

Stat	How to Find	Explanation
Mean		Add all the scores and divide by 8, the number of contestants. The mean is 42.25.
Median		First put the scores in order, then find the middle value. In this set, the middle value lies between 44 and 39, so add these middle numbers together and divide by 2. The median is 41.5.
Mode	No mode	No score occurs more than once, so there is no mode for this data set.
Range		Subtract the smallest score from the largest. The range is 20 points.

For this data set, there are really only two measures of the average, since there is not a mode. Both the mean and median could be used to describe the average. 

Usually each theory requires practice after itself, and this leads you to a deeper understanding of the subject


Instructor’s Guide
Activity 1.
Determine the students’ pre-, post-test results given in Table 1. based on the provided rules. (the results were rated on a maximum 30-point scale. Aspect:vocab.)
Pre-test Posttest
Mean- Mean-
Mode- Mode-
Median- Median-
Range- Range-
Activity 2. A Panel Discussion

1. 
   How Can a Pre and Post-Test Be Used For More Effective Teaching?
   
2. 
   How Can a Pre and Post-Test Be Used as a Teacher Diagnostic Tool?
   
3. 
   Benefits and drawbacks of working with these formulas
   
4. 
   The most important functions of both tests
   

“Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time”. - Thomas Edison
Motivational Closing