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Statistics

Dive into the realm of statistical methods and analyses, covering everything from probability and data collection to descriptive and inferential statistics. This subject is crucial in making informed decisions based on data.

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Questions
Q: Where can I find accurate information and statistics on child obesity
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Q: (b)For a set of numbers 1,4,7. Find population mean and Variance. Draw up frequency distributions of means of all possible samples of size 3 when sampling is carried out with replacement. Find mean and variance of distribution
1 answer
Q: A particular fruit's weights are normally distributed, with a mean of 298 grams and a standard deviation of 13 grams.If you pick one fruit at random, what is the probability that it will weigh between 262 grams and 269 grams
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Q: Which of the following is an example of a qualitative data a) there are seven books b) she has three classesc)the baby rabbits are sleepy d) the fish swims
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Q: A normal distribution has a mean of µ = 50 with σ = 10. What proportion of the scores in this distribution are greater than X = 65
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Q: Explain what is meant when we say "data Vary". How does this variability affect the results of statistical analysis
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Q: A bag contains 3 blue marbles 7 red marbles and 5 yellow marbles. If Joe picks 1 marble from the bag at random what is the probability that it will be blue
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Q: Andy has two samples of liquids. Sample A has a pH of 4, and sample B has a pH of 6. What can Andy conclude about these two samplesSample A is , and sample B is
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Q: Is not a factor in wage variance between different occupations
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Q: Why is the range always greater than the IQR
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Q: What conditions are necessary in order to use a test to test the differences between two population means
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Q: If you are dealt 5 cards from a shuffled deck of 52 cards find the probability of getting two queens and 3 kings
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Q: How do I set alpha in statistics
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Q: In the calculation of the arithmetic mean for grouped data which value is used to represent all the values in a particular class
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Q: How many skateboards are sold in US per year
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Q: What is the probability of drawing a 6-inch pair of pliers from the first basket without looking
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Q: If correlation between x and y is zero. that means the variables are independent
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Q: What data cant be measured but divided into groups
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Q: How many outcomes are in the sample space for rolling two dice
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Q: Is the square footage of a house discrete or continuous
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Q: What is the probability of drawing three aces in a row without replacement
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Q: If the total area of a dartboard is 40000 mm2 and the area of the second ring is 17500 mm2 what is the probability of landing in that second ring
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Q: What is initial temperature mean
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Q: What is the value of 10008.75 in ti 84 calculator
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Q: IF two variables that have the same mean and standard deviation have the same distribution
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Q: Is not a common driving error
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Q: What are the requirements for Poisson distribution
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Q: If a sample of size 3 students showed the following grades in a certain exam 74 75 and 76 then the variance is
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Q: Is country of residence qualitative or quantitive
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Q: What is the probability of drawing a red or black card in a deck of 52 cards
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Q: How The first quartile of a data set is 23 the median is 30 the third quartile is 33 and an outlier is 50. Which of these data values would be represented by a point in a modified box plot
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Q: What are the probabilities of spinning red green yellow and blue if a spinner is divided equally into those four colors
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Q: If X is a normal random variable with standard deviation 4.00 and if the probability that X is more than 5.52 is .1271 then what is the mean of X
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Q: What measures of association can be used for nominal data
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Q: Is the students age qualitative or quantitative
2 answers
Q: What is age of car driven Qualitative or Quantitative
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Q: What overall death rates in the US have declined over the past 100 years
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Q: In a distribution the frequency of a class is replaced with a proportion or percent
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Q: If a red suit is drawn from an ordinary deck of cards what is the probability that the card is a diamond
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Q: When two events are independent the probability that one event occurs in no way affects the probability of the other event occurring true or false
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Q: How extreme value affect mean
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Q: What Conditions necessary for a measure of variation to have a positive value
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Q: What is the most commonly used statistical index of variability in a group of scores is the
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Q: How many distrinct permutations can be formed using the letters of the word Tennessee
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Q: What is the probability of getting a heart or black card
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Q: If radio station call letters must begin with either K or W and must include either two or three additional letters how many different possibilities are there
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Q: Which statements accurately describes the measures of central tendency
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Q: If A person who scored at the sixtieth percentile in a test scored highter than 300 people if 500 people took the test
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Q: If the coefficient of determination for a data set containing 12 points is 0.5 6 of the data points must lie on the regression line for the data set.
1 answer
Q: Which of these does correlation most likely imply causation
1 answer
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