An interval scale is a scale of measurement where the distance between any two adjacents units of measurement (or 'intervals') is the same but the zero point is arbitrary. Scores on an interval scale can be added and subtracted but can not be meaningfully multiplied or divided. For example, the time interval between the starts of years 1981 and 1982 is the same as that between 1983 and 1984, namely 365 days. The zero point, year 1 AD, is arbitrary; time did not begin then. Other examples of interval scales include the heights of tides, and the measurement of longitude.
from: http://www.cas.lancs.ac.uk/glossary_v1.1/presdata.html#discdat
10-24-2000
1. HW P95 #5........2. Collect Data.....3. .................
4. .................5. .................6. .................
OBJECTIVE: Collect the data set for the class data on the
average student project[4.1.1] ACTIVITIES: Process to be run
and coordinated by the students. NOTES: HOMEWORK: Evaluate
the collections process: 1) What was done? 2)How well did it
work? 3)What was bad about it? 4)How could it be made better?
Answers should be WordProcessed, typed, or written neatly in
ink.[4.2.1]
10-25-2000
1. HW Collect Eval..2. .................3. .................
4. .................5. .................6. .................
OBJECTIVE: Choose appropriate scales and intervals for
data.(3-3, Pp98ff)[1.4.5][1.4.6] ACTIVITIES: Establish format
and checklist for Average Student project NOTES: HOMEWORK:
p577 lesson 3-3 all
10-26-2000
1. HW P577(3-3)all..2. .................3. .................
4. .................5. .................6. .................
OBJECTIVE: Application ACTIVITIES: Make frequency tables from
the student data for hair color, eye color and show size. Make
range scale and intervals for height, weight and age. [1.4.6]
NOTES: HOMEWORK: Finalize in class with neat papers, i.e,
number lines with rulers, etc.
10-27-2000
1. HW DataAnalysis1.2. WASL Task 1......3. .................
4. .................5. .................6. .................
OBJECTIVE: Students will complete the WASL task for Quarter 1.
ACTIVITIES: After completion, work on Data collections, etc.
and update checklists for the average Student project. NOTES:
HOMEWORK: P100 24 and 25
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