Standard deviation questions
[DOCX File]AP BIOLOGY--LAWNDALE HS
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Which do you expect to have the smallest standard deviation? Explain your answer. (b) Find the standard deviation for each data set. If your answers do not match your predictions, make sure to go back and explain how you can predict the ranking (i.e. smallest and largest) standard deviations from the data that are given. 7.
[DOC File]Z-Score Practice Worksheet
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If the standard deviation is 70 wpm, find the z-scores associated with each of the following reading speeds. a) 320 wpm b) 475 wpm c) 610 wpm. 4. SAT vs. ACT. Eleanor scores 680 on the SAT mathematics test. The distribution of SAT scores is symmetric and single peaked, with a mean of 500 and standard deviation of 100.
[DOCX File]CALCULATING STANDARD DEVIATION WORKSHEET
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When the standard deviation is large, the scores are more widely spread out on average from the mean. The standard deviation is calculated to find the average distance from the mean. Practice Problem #1: Calculate the standard deviation of the following test data by …
[DOC File]FE Exam Review
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In statistics, the standard deviation measures. A standard distance. c. a normal distance. Dispersion d. central tendency. If the null hypothesis for a population mean is , where c is a constant, then the alternative hypothesis must be: c. d. A dice is a cube with six sides. Each side is labeled uniquely with the numbers from one to six.
[DOC File]Z-Score Practice Worksheet
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A patient recently diagnosed with Alzheimer’s disease takes a cognitive abilities test and scores a 45. The mean on this test is 52 and the standard deviation is 5. What is the patient’s percentile rank? 8.1%. A fifth grader takes a standardized achievement test (mean = 125, standard deviation …
[DOC File]A Level Mathematics Questionbanks
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b) Calculate the mean and standard deviation of the weights. [4] c) Explain why the mean and standard deviation may not be the best statistics to use, and suggest suitable . alternative measures of location and spread. [3] 21. A data set containing 20 values have mean 12, standard deviation 3, median 10 and interquartile range 5.
[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: 8, 4 ...
[DOCX File]Part A - University of Phoenix
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Questions 3a through 3d are based on a distribution of scores with X =75 . and the standard deviation = 6.38.. Draw a small picture to help you see what is required.
[DOC File]Name:
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For questions 1-3, try not use a calculator. 1) A list has 10 numbers. Each number is a 1, 2, or 3. The average is 2 and the standard deviation is 0. What are the 10 numbers? 2) Three instructors are comparing scores on their finals; each had 99 students. In class A, one student scored 1 point, another scored 99 points, and the rest scored 50 ...
[DOC File]Variance and Standard Deviation Questions - Web Maths
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The standard deviation σ. 2. Ten collie dogs are weighed (w kg). The following summary data for the weights are shown below: Σw = 241 Σw2 = 5905. Use this summary data to find the standard deviation of the collies’ weights. 3 . Eight students’ heights (h cm) are measured. They are as follows: 165 170 190 180 175 185 176 184 a
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