Standard Deviation and Data
DESCRIPTIVE STATISTICS: NUMERICAL MEASURES
MULTIPLE CHOICE QUESTIONS
In the following multiple choice questions, circle the correct answer.
1. Which of the following provides a measure of central location for the data? a. standard deviation b. mean c. variance d. range Answer: b
2. A numerical value used as a summary measure for a sample, such as sample mean, is known as a a. population parameter b. sample parameter c. sample statistic d. population mean Answer: c
3. Since the population size is always larger than the sample size, then the sample statistic a. can never be larger than the population parameter b. can never be equal to the …show more content…
22. The interquartile range is used as a measure of variability to overcome what difficulty of the range? a. the sum of the range variances is zero b. the range is difficult to compute c. the range is influenced too much by extreme values d. the range is negative Answer: c
23. If the variance of a data set is correctly computed with the formula using n  1 in the denominator, which of the following is true? a. the data set is a sample b. the data set is a population c. the data set could be either a sample or a population d. the data set is from a census Answer: a
24. In computing descriptive statistics from grouped data, a. data values are treated as if they occur at the midpoint of a class b. the grouped data result is more accurate than the ungrouped result c. the grouped data computations are used only when a population is being analyzed d. None of these alternatives is correct. Answer: a
25. The measure of dispersion that is influenced most by extreme values is a. the variance b. the standard deviation c. the range d. the interquartile range Answer: c
26. When should measures of location and dispersion be computed from grouped data rather than from individual data values? a. as much as possible since computations are easier b. only when individual data values are unavailable c. whenever computer

Standard Deviation and Cash Flow
1680 Words  7 Pagesare risk averse and have the following three choices. Which project will you select? Compute the coefficient of variation for each.  Expected Standard   Value Deviation  A $1,800 $900  B 2,000 1,400 …

Standard Deviation and Minimum Order
1720 Words  7 Pagesdifficult. Also, another issue Sport Obermeyer faced was how to allocate production between factories in Hong Kong and China. They need consider all aspects in a shortterm period and also a longterm period. Questions: 1. Using the sample data given in Table 220, make a recommendation for how many units of each style Wally should make during the initial phase of production. Assume that all of the 10 styles in the sample problem are made in Hong Kong and that Wally’s initial production commitment…

Standard Deviation
1170 Words  5 PagesDeviation Definition: Behavior commonly seen in children that is the result of some obstacle to normal development such behavior may be commonly understand as negative (a timid child, a destructive child) or positive (a quite child), both positive and negative deviation will disappear once the child begins to concentrate on a piece of work freely chosen by him. The physical deforms are easier to identify. This can be by birth due to an accident etc… and most such physical deforms…

Population Standard Deviation
809 Words  4 PagesJAMES CHAPTER 8 1. High temperature in the United States a meteorologist claims that the average of the highest temperatures in the united states in 98. A random sample of 50 cities is selected, and the highest temperatures are recorded. The data are shown. At a=0.05 can the claim be rejected? a=7.7 97, 101, 99, 99, 100, 94, 87, 99, 108, 93, 96, 88, 98, 97,88, 105, 97, 96, 98, 102, 99, 94, 96, 114, 99, 96, 98, 97, 91, 98, 80, 95, 98, 96, 80, 95, 88, 99, 102, 95, 101, 94, 92, 99, 101, 97, 94…

Standard Deviation
1154 Words  5 PagesI 'll be honest. Standard deviation is a more difficult concept than the others we 've covered. And unless you are writing for a specialized, professional audience, you 'll probably never use the words "standard deviation" in a story. But that doesn 't mean you should ignore this concept. The standard deviation is kind of the "mean of the mean," and often can help you find the story behind the data. To understand this concept, it can help to learn about what statisticians call normal distribution…

Mean and Standard Deviation
1215 Words  5 PagesMean and Standard Deviation The mean, indicated by μ (a lower case Greek mu), is the statistician 's jargon for the average value of a signal. It is found just as you would expect: add all of the samples together, and divide by N. It looks like this in mathematical form: In words, sum the values in the signal, xi, by letting the index, i, run from 0 to N1. Then finish the calculation by dividing the sum by N. This is identical to the equation: μ =(x0 + x1 + x2 + ... + xN1)/N. If you are not…

Standard deviation abstract
1465 Words  6 PagesStandard Deviation Abstract QRB/501 Standard Deviation Abstract Standard Deviations Are Not Perverse Purpose: The purpose of this article is to illustrate how using statistical data, such as standard deviation, can help a cattleman choose the best lot of calf’s at auction. The statistical data used in these decision making processes can also help the cattleman with future analysis of the lots purchased and existing stock. Research Question: How can understanding the standard deviation…

Normal Distribution and Standard Deviation
1399 Words  6 PagesStudent Exploration: Sight vs. Sound Reactions Vocabulary: histogram, mean, normal distribution, range, standard deviation, stimulus Prior Knowledge Questions (Do these BEFORE using the Gizmo.) Most professional baseball pitchers can throw a fastball over 145 km/h (90 mph). This gives the batter less than half a second to read the pitch, decide whether to swing, and then try to hit the ball. No wonder hitting a baseball is considered one of the hardest things to do in sports! 1.…

Standard Deviation and Percentage Essay
6614 Words  27 PagesRemington’s Steakhouse is a single location restaurant in Tampa Florida. Patron data has been collected recently by the survey method of data collection to understand customer perception and Remington’s performance. The purpose of this study is to ascertain customer’s restaurant selection criteria, performance perceptions and the overall satisfaction with Remington’s. This goal is achieved by a review of the Remington’s survey data and survey methodology, categorize the most/least important restaurant…

Hypothesis: Standard Deviation and Critical Value
1740 Words  7 Pagesbelow is 2.57 when the critical value is 1.96, what decision about the hypothesis should be made? A)reject the null hypothesis  B)accept the null hypothesis  C)reject the alternative hypothesis  D)not enough information  2.The standard error of difference is . A)True B)False 3.In the figure below, if the test value is 1.43, the null hypothesis should not be rejected.  A)True B)False 4.When hypothesizing a difference of 0, if the confidence interval…
More about Standard Deviation and Data

Standard Deviation and Cash Flow
1680 Words  7 Pages 
Standard Deviation and Minimum Order
1720 Words  7 Pages 
Standard Deviation
1170 Words  5 Pages 
Population Standard Deviation
809 Words  4 Pages 
Standard Deviation
1154 Words  5 Pages 
Mean and Standard Deviation
1215 Words  5 Pages 
Standard deviation abstract
1465 Words  6 Pages 
Normal Distribution and Standard Deviation
1399 Words  6 Pages 
Standard Deviation and Percentage Essay
6614 Words  27 Pages 
Hypothesis: Standard Deviation and Critical Value
1740 Words  7 Pages