What do Test Scores Really Mean?. Rebecca Mann rlmann@purdue.edu. Why test?. School effectiveness Determine what students know and can do Compare student achievement to achievement of similar students Compare student ability level and achievement. Norm vs. Criterion Referenced.

ByVariability. Chapter 4. What is it?. How much difference there is from person to person How spread out scores are No variability = all scores are the same. Why do we care?. Less variability = more know about the population based on the sample

By1-7 Variance & Standard Deviation. Investigation…. Let’s take a look at the following two sets of notebook grades: A: {59, 60, 60, 62, 63, 64, 67, 68, 68, 69} B: {59, 63, 64, 64, 64, 64, 64, 64, 65, 69} Create a dotplot for each set of data…. 59 61 63 65 67 69.

ByChapter 5 Measures of Variability. The importance of measuring variability IQV (index of qualitative variation) The range IQR (inter-quartile range) Variance Standard deviation Considerations for choosing a measure of variation. The Importance of Measuring Variability.

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ByNumber of Workers (millions). The table shows the number of workers , in millions,. 778. 472. 147. 106. 82. China. India. U.S. Indonesia. Brazil. Country. Number of Workers (millions).

ByData Structures. Objectives. To understand the use of lists (arrays) to represent a collection of related data. To be familiar with the functions and methods available for manipulating Python lists. To be able to write programs that use lists to manage a collection of information.

ByThe Red Beads Experiment. What was wrong with management’s decision to keep the place open with the best workers? What is the meaning of the best workers? Best when? Over what time period?

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ByChapter 5 – Measurements of Variability. Math 22 Introductory Statistics. Measures of Variability. Range - The difference between the highest and lowest measurement. Range = Highest – Lowest Deviation = Observation – Mean . Standard Deviation and Variance.

ByValuing Cash Flows. Non-Contingent Payments. Non-Contingent Payouts. Given an asset with fixed payments (i.e. independent of the state of the world), the asset’s price should equal the present value of the cash flows. . Treasury Notes.

ByPOWERFUL ANDROID MONITOR. CS234 PROJECT. Boyu Sun, Dawei Ouyang , Shi Yan, Qiwei Zhang. VISION. Give consistent care to hospitalized family member wherever you are: Capture patients’situation in time alert when dangerous signal raises Allow remote monitor.

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ByAre you here?. Yes, and I’m ready to learn Yes, and I need a nap No. Apple Problem. When a truck load of apples arrives at a packing plant, a random sample of 125 is selected and examined for bruises, discoloration, and other defects.

By6.9 – Discrete Random Variables: Mean and Standard Deviation. IBHLY2 - Santowski. (A) Mean of a Probability Distribution. for a discrete random variable, X, which can assume the values x 1 , x 2 , x 3 , .... x n , the mean is also called the expected value of X

ByStandard Deviation and Z score. Algebra I. Standard Deviation. Definition – When looking at a set of data, the distance away from the mean. The center is considered the most ‘typical’. How far from ‘typical’ is the data?. Standard Deviation.

ByThe Magnetic Compass. Floating Pin Marine- floating card Binnacle Mounted Hand bearing. The Magnetic Compass. Compass card with points of the compass We usually use 360 degree compass. The Steering Compass. Binnacle or dash mounted Bulkhead mounted. The Hand Bearing Compass.

ByTermination. When does a trust terminate?. When does a trust terminate?. 1. Express terms of trust Most common method § 112.052. When does a trust terminate?. 2. Settlor revokes § 112.051. When does a trust terminate?. 3. Property exhausted No trust without property § 112.005.

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