Statistics

Statistics test 3 Questions & Answers d) Determine the probability that a randomly selected multiple birth for women 15-54 years old involved a mother who was at least 40 years old. Interpret this result. Is it unusual? Find the probability that a randomly selected multiple birth for women 15-54 ...

Statistics Questions & Answers 13 - ANSWER: What is the lower class limit in the class 13-17? 35.5 - ANSWER: Using the class 23-35, what is the upper class boundary? 52 - ANSWER: A linear regression line y = 0.8x - 10 is computed to predict the final exam score y on the basis of the first score ...

Statistics Questions & Answers a correlation coefficient close to 1 is evidence of a cause and effect relationship between the two variables - ANSWER: false a medical study was investigating if getting a flu shot actually reduce the risk of developing the flu. From a group of adult volunteers, r...

AP Statistics Questions & Answers 10% rule - ANSWER: a sample has to be lass than 10% of the whole population 5 number summary - ANSWER: The minumum value, lower quartile, median, upper quartile, and maximum value for a data set. These five values give a summary of the shape of the distribution ...

Statistics Questions & Answers BAD SURVEY - ANSWER: 1.Do not ask leading questions; Don't influence people's decisions 2. Do not ask personal questions 3. Do not include any overlapping responses biased - ANSWER: means UNFAIR Box plots - ANSWER: 5 pieces of information commenting on the box ...

Statistics Online Questions & Answers *the median for the given set of six ordered data values is 29.5 - ANSWER: 7 12 21 38***** 41 51 a data set will always have exactly one mode - ANSWER: false a histogram of a set of data indicates that the distribution of the data is skewed right. which ...

Statistics Questions & Answers Advantages of q-q plot - ANSWER: (1) The sample sizes do not need to be equal. (2) Many distributional aspects can be simultaneously tested. For example, shifts in location, shifts in scale, changes in symmetry, and the presence of outliers can all be detected from ...

Statistics 211 Questions & Answers 1 Nominal Level - ANSWER: applies to data that consist of names, labels, or categories. There is no implied criteria. 2 Ordinal Level - ANSWER: applies data that can be arranged in order. However, differences between data values either cannot be determined or a...

Statistics Chapter 2 Questions & Answers 37. For the distribution in the following table, what is the 50th percentile? a. X = 32 X c% b. X = % c. X = % d. X = % 20-29 20% - ANSWER: 32 A group of quiz scores ranges from 3 to 10, but no student had a score of X = 5. If the scores are put in a ...

Statistics Questions & Answers Box and whisker plot - ANSWER: 1. minimum data entry 2. Q1 3. Q2 4. Q3 5. maximum data entry Class width - ANSWER: range/ # of classes Cumulative frequency (OGIVE) - ANSWER: The sums of the frequencies of the data values from smallest to largest. (use class wi...

Quiz 1 Statistics Questions & Answers _______ are sample values that lie very far away from the majority of the other sample values. outliers - ANSWER: _______ is used when subjects are assigned to different groups through a process of random selection. Randomization - ANSWER: A _______ helps ...

AP Statistics Fall Final Review Questions & Answers Section 1.0 Here is a small part of the data set that describes the students in an AP Statistics class. The data come from anonymous responses to a questionnaire filled out on the first day of class. The individuals in this data set are - ANSWE...

Statistics Ch. 1 - Data collection Questions & Answers anecdotal - ANSWER: the information being conveyed is based on casual observation, not scientific research approach - ANSWER: a way to look at and organize a problem so that it can be solved. bias - ANSWER: the results of the sample are not ...

Statistics Questions & Answers Binomial Experiment - ANSWER: Experiment with a fixed number of trials, 2 outcomes, constant probability of success, and trials are independent. Chebysheffs Theorem - ANSWER: (1-1/K^2) of the data's values lie withink K standard deviations. Cluster Sampling - ANS...

Statistics Questions & Answers Binomial Experiment - ANSWER: Experiment with a fixed number of trials, 2 outcomes, constant probability of success, and trials are independent. Chebysheffs Theorem - ANSWER: (1-1/K^2) of the data's values lie withink K standard deviations. Cluster Sampling - ANS...

Statistics Mid-term Questions & Answers ______are the categories by which data are grouped. - ANSWER: Classes _____statistics consists of organizing and summarizing information collected, while ______statistics uses methods that generalize results obtained from a sample to the population and mea...

Intro. to Statistics MCCC Ch. 1 Questions & Answers - is used when subjects are assigned to different groups through a process of random selection. - ANSWER: randomization A handler loads one item every 15 minutes, so 160 items are completed in her first week of work. Her manager checks her wor...

Statistics Questions & Answers A class interval, which is the width of a class, can be determined by subtracting the lower limit of a class from the lower limit of the next higher class. - ANSWER: A difference between calculating the sample mean and the population mean is - ANSWER: Only in the s...

Statistics Questions & Answers A group of subjects to which researchers apply a treatment in an experiment - ANSWER: Treatment group A market researcher interviews each member from each of the five randomly chosen neighborhoods throughout a city. - ANSWER: Cluster Sampling A response to the pow...

Statistics Chapter 9 Questions & Answers A 95% confidence interval for the ages of six consecutive presidents at their inaugurations is about (48.4, 54.2). Either interpret the interval or explain why it should not be interpreted. - ANSWER: It should not be interpreted. The data are not a random ...

Statistics Symbols Questions & Answers 1 - ANSWER: CDF of a Poisson— it will never equal __, it will only approach it (doesn't have a stopping point) 1 - F(a) - ANSWER: P(X greater than or equal to a) 1. "Is it counting a # of successes?" 2. "Do I have a finite Bernoulli Process?" i. "...

Statistics Chapter 1 Questions & Answers Advantages of bar graph when compared to a pie chart - ANSWER: Both graphs can display the distribution of a categorical variable, but a bar graph can also compare any set of quantities that are measured in the same units. Are quartiles/IQR resistant? - A...

STATISTICS QUESTIONS & ANSWERS a block is a group of subjects that are similar, but blocks differ in ways that might affect the outcome of the experiment. - ANSWER: Randomized block design a numerical measurement describing some characteristic of a population - ANSWER: parameter a numerical meas...

Statistics Chapter 3 Questions & Answers (xbar, y bar) - ANSWER: The least-squares regression line for any data set passes through the point (x bar, y bar) 2 tools to describe the relationship between variables - ANSWER: 1.) Correlation 2.) Regression Accuracy of predictions - ANSWER: The accur...

Statistics midterm(hw1) Questions & Answers A cardiologist is interested in the mean recovery period of her patients who have had heart attacks. - ANSWER: A fitness center is interested in the mean amount of time a client exercises in the center each week: (2-5) - ANSWER: A marketing company is...

Statistics Chapter 9-10 Questions & Answers A gambler conducts a study to determine whether the time it took a horse to run its last race can be used to predict the time it takes the horse to run its next race. In this study, the explanatory variable is - ANSWER: the time it took a horse to run i...

Statistics Final Ch. 4-6 Questions & Answers _____________ is the distribution of all values of the statistic when all possible samples of the same size n are taken from the same population. - ANSWER: The sampling distribution of a statistic _____________ is the distribution of sample proportion...

Statistics Questions & Answers Categorical - ANSWER: Example [Classifications of data according to NATURE] Address Categorical - ANSWER: Example [Classifications of data according to NATURE] Date of Birth Categorical - ANSWER: Example [Classifications of data according to NATURE] Occupation C...

GCSE Statistics Keywords Questions & Answers Advantages of a census - ANSWER: Unbiased Takes the whole population into account - Accurate Advantages of a sample - ANSWER: Cheaper Less time consuming Easy to manage Bar chart/Line Diagrams/Pictograms - ANSWER: Bar chart in which the length of t...

Statistics Week 1-3 Questions & Answers A 2016 Pew Research poll estimated the proportion of people supporting each presidential candidate in the fall election. They based their estimates on telephone interviews of 2,010 adults living in all 50 U.S. states. They asked each participant which presi...

Statistics Quiz/Test 2 Questions & Answers 0.8340. The value of z is - ANSWER: 0.97 A 99% confidence interval estimate can be interpreted to mean that - ANSWER: both of the above A catalog company that receives the majority of its orders by telephone conducted a study to determine how long cust...