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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: Can frequency distribution contain qualitative data
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Q: What is the MAIN cause of employee sick time and lost productivity in the US
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Q: Difference between random sample and convenience sample
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Q: 2 out of 3 of John's marbles is equal to 3 out of 5 of Max's marblesThey have 266 marbles altogether How many marbles does John have
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Q: Why and how surveys are conducted
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Q: What is the meaning of upper class boundary in statistics
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Q: What are difference between uniformly most powerful test and most power test
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Q: What is the element of the sample space for a coin then rolling a die
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Q: Three fair dice are tossed What is the probability that at least two of them show that same face
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Q: What are the chances of dealing out cards that have been shuffled well in exact order
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Q: Under what circumstances would a score that is located 5 points above the mean be considered relatively close to the mean
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Q: What is the critical z value thst corresponds to a confidence level of 88 percent
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Q: What is the probability of getting a diamond and five without replacement
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Q: How many 4 digit numbers can be formed from the digits 7341 if none of the digits can be repeated
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Q: 3 digit combinations that equals 15 using 1-9
3 answers
Q: 10 cards are numbered from 1 to 10 and placed in a box One card is selected at random and is not replaced Another card is randomly selected What is the probability of selecting two prime numbers
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Q: When is the median the most appropriate center for a distribution
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Q: If the sample variance increases the estimated standard error will also increase
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Q: Which quadrants is -1 0 located on the graph
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Q: Find z score for normal distribution for 70 percentile
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Q: How many standard deviations is the first quartile away from the mean on a Normal distribution
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Q: The probability of an event occurring is 0.7 what is the probability it won't ocurr
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Q: What is the probability of rolling a sum of 7 or a sum of 11
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Q: In a unimodal symmetrical distribution the mean is equal to
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Q: Describe the conditions necessary for a measure of variation to have the value zero
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Q: If using numbers 0 through 9 how many 3 digit combinations
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Q: When rolling two dice which outcome is more likely a sum of 3 or sum of 5
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Q: In a wooded area you randomly select 10 trees and find that 3 are tagged You conclude that there is a 30 percent probability of randomly selecting a tagged tree
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Q: Differentiate the three types of variable
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Q: The set of rules that provide administrative simplification by standardizing the codes and formats used for the exchange of medical data is referred to as
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Q: For a normal distribution find the z-scores values that separate the middle 60 percent of the distribution for the 40 percent in the tails
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Q: Example of nominal variable and real variable
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Q: What is the formula for cumulative incidence difference
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Q: What is difference between a discrete variable and a continuous variable
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Q: A fair die is rolled 36 times What is the standard deviation of the even number 2 4 or 6 outcomes
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Q: A fellow classmate tosses 3 coins and finds that 2 of them come up tails Which of the following is the best conclusion for her to come to
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Q: How many possible outcomes are in the sample space for the event first roll a die and then shoot a basket
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Q: What is the z value for 75 percent confidence interval estimation
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Q: Formula of mean for grouped data
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Q: In a good regression model the residual plot shows
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Q: Does the empirical rule work for any data set
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Q: A six sided cube is rolled find the probability of P6
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Q: What proportion of a normal distribution is located in the tail beyond a z-score if z equals -1.50
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Q: What is simple random sampling and stratified random sampling
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Q: What is 0.1 for a two tailed test
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Q: The most widely used technique in collecting data for job analysis is
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Q: What is the probability of getting tails 4 times in a row when you flip a coin
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Q: What is the probability of getting exactly 8 tails in a row when flipping a coin ten times
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Q: Which of the following cannot be the probability of an event
1 answer
Q: What is the symbol for mean difference in statistics
1 answer
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