interpreting scores from test
TRANSCRIPT
Counting Assessment Data: Validating Evidences for Classroom-Based
Action Research
11/01/16
EVALUATION
MEASUREMENT
ASSESSMENT
True Learning?I TAUGHT THIS DOG HOW TO
WHISTLE
I DON’T HEAR HIM WHISTLING
I SAID I TAUGHT HIM. I DIDN’T SAY
HE LEARNED IT.
[Artist Unknown]“
It is assessment which helps us distinguish between teaching and learning.
Remember:
We make decisions and offer interventions out of assessment results…… hence, assessment process should be valid and reliable.
11/01/16
10
Delivering FormativeAssessment
Make learners aware of the learning goal
Determine current status of
students
Move students closer to the goals
Individual Student Progress
IN TERMSOF
IN TERMSOF
What Students
Learn or Did not Learn
What Students Can or Can’t not
Do
GENERATES
Timely Student Achievement Information
TO MONITOR
TO EVALUATE
Instructional Effectiveness
(Team or Individual)
ADDRESSED BY WARRANTS
Modifying Instruction
Re-teaching
Formative Assessment(Ainsworth & Viegut, 2006)
Component Description Examples
Written Work Express skills and concepts in written form
Quizzes, long tests, essays,written reports
Performance Task Show and demonstrate what learners can do
Demonstration, group presentations, oral work, multimedia presentations, research projects (written works such as essays)
Quarterly Assessment
Measure students learning at the end of the quarter
Objective tests and performance-based assessment
Weights for Grades 1-10
11/01/16
PART 2: GRADING SYSTEM
Getting the Meaning of Scores: Implication for
Planning and Intervention
11/01/16
11/01/16
11/01/16
True Score = Observed Score ± Error
RAW SCORE vs CONVERTED SCORE
Describing the Data Measures of Central Tendency (Mean, Median, Mode)
Measures of Variation (Range, Variance, Standard Deviation)
11/01/16
Mean•The most commonly used measure of central tendency, refers to the arithmetic average of a group of scores
•It is the most sensitive measure of central tendency
•It is the most appropriate measure of central tendency when using ratio data
•It considers all information about the the data
•It is influenced by extreme scores, especially in small sample
11/01/16
The MedianThe median is the score that represents the exact middle in a distributionIt is not affected by extreme scores, so it is a more representative of the central tendency when extreme scores are presentIt is a measure of position within the distributionIt is NOT used for additional statistical calculations
11/01/16
The ModeThe mode is the score within a distribution that occurs most frequentlyIt is the least used measure of central tendencyIt is not used for additional statistical calculationsIt is the most unstable measure of central tendency
11/01/16
Distribution ShapesThe graphical shape of a distribution can tell a person about the distribution of scores and about the sample being measuredThe distribution shape can be defined by symmetry or by height and widthThe term for the symmetry of a distribution is skewedness, while the height and width is described by kurtosis
11/01/16
Skewed DistributionsA distribution can be positively skewed, normal, or negatively skewed.Skewedness is described by “where the scores cluster” within a distribution
11/01/16
11/01/16
Sample Case in Senior HS:
11/01/16
Peter obtained a score of 85 on his psychology midterm and 90 on his history midterm. On which test did he do better compared to the rest of the class?
Psychology History Grade 85 90 Mean 75 140 SD 10 25
Group Norms
11/01/16
Mean Median Mode .13% 2.14% 13.59% 34.13% 34.13% 34.13% 2.14% .13% - 3 SD - 2 SD -1 SD 0 + 1 SD + 2 SD + 3 SD
13.59%
If we will use the normal curve as a model for a distribution with a mean of 61 and a standard deviation of 7, we would expect 34.13% (about 34% or about 1/3) of the scores in this distribution to fall between 61 and 68.
11/01/16
Converted Scores (Standard Scores)
Z-Scores – enable us to convert raw scores from any distribution to a common scale regardless of its mean or standard deviation, so that we can easily compare such scores.
11/01/16
PercentilesDecileQuartile
11/01/16
11/01/16
11/01/16
11/01/16
Daghang Salamat!
11/01/16
11/01/16