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[DOC File]STANDARD DEVIATION
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1. Using the scores in the accompanying table, find the standard deviation to the nearest. hundredth. Find the mean to the nearest tenth. Scores Frequency 60 2 65 6 70 4 75 8 80 5 2. The scores on a mathematics test are 42, 51, 58, 64, 70, 76, 76, 82, 84, 88, 88, 90, 94, 94, 94, and 97.
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[DOC File]CALCULATING STANDARD DEVIATION WORKSHEET
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Sep 26, 2015 · When the standard deviation is large, the scores are more widely spread on average from the mean. The . standard deviation. is calculated as the . average distance from the mean. Practice Problem #1: The junior high basketball team played ten games. Find the standard deviation for the number of baskets scored by the team for the ten games:
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[DOC File]Scores and What They Mean - Region 10 Website
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Standard score at the +2 standard deviation in a normal curve __B___5. Mean of most composite standard scores __E___6. Size of standard deviation for most composite standard scores. A. 70. B. 100. C. 68. D. 16. E. 15. F. 130. G. None of the above. Fill in the blanks: Three years ago, Jason had a standard score of 85 on a reading comprehension test.
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[DOCX File]Rivier University - My School Psychology
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STANDARD SCORES ("quotients" on some tests) have an average (mean) of 100 and a . standard deviation. of 15. A standard score of 100 would also be at the 50th percentile rank. The middle half of these standard scores falls between 90 and 110. SCALED SCORES ("standard scores on some tests) are standard scores with an average (mean) of 10 and a
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[DOC File]The POWERMUTT Project: Standard Scores and the Normal ...
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If variables are normally distributed, standard scores become extremely useful. It turns out that, in a normal distribution, 68 percent of cases will be within one standard deviation of the mean (that is, will have a z score within the range of ±1), 95 percent will be within two standard deviations of the mean, and 99.7 percent will be within ...
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[DOC File]Topic 6: Standard Scores
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Regardless of the original scores. If all the scores in a collection are converted to Z-scores . . . 1. The mean of the Zs will always be 0. 2. The standard deviation of the Zs will always be 1. 3. The shape of the distribution of Zs will be the same as the shape of the distribution of Xs. Three useful facts about Zs
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[DOCX File]NAMEXX’S TEST SCORES
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STANDARD SCORES ("quotients" on some tests) have an average (mean) of 100 and a . standard deviation. of 15. A standard score of 100 would also be at the 50th percentile rank. The middle half of these standard scores falls between 90 and 110. SCALED SCORES ("standard scores on some tests) are standard scores with an average (mean) of 10 and a
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[DOC File]Scores and What They Mean - Region 10 Website
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E. Range of scores around an obtained score. F. Indicator of functionality compared to average age or grade mates. G. None of the above. Match each statement with its answer: PRE POST _____1. Percent of children between standard scores of 85 and 115 1._____ _____2. Percent of children with a standard score of 70 or lower 2._____ _____3 ...
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[DOC File]Gilliam Autism Rating Scale (GARS-2)
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Sum of Standard Scores XX XX. Autism Index XX XX% XX XX% Probability of Autism is Unlikely, Possibly, Very Likely. Note: On this tool, if the subject’s Autism Index is 85 or above, the person is very likely autistic, and if the Autism Index is 70-84, the person is possibly autistic. Autism Indexes of 69 or less indicate that the person is ...
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[DOC File]Standard Deviation/Standard Score Correspondence
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Standard Deviation/Standard/Scaled Score Correspondence Standard Deviation (SD) Standard Score Scaled Score 2 SD above mean 130 or above 16 or above 1 SD above mean Between 115 and 130 Between 13 and 16 Within 1 SD of mean Between 85 and 115 Between 7 and 13 1 SD below mean Between 70 and 85 Between 4 and 7 1.5 SD below mean 77.5 5.5 2 SD below ...
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Standard scores range