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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: Will the standard error decrease if the sample size increases
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Q: How companies use probability
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Q: How many four digit numbers containing no zeros have the property that whenever any one of its four digits is removed the resulting three digit number is divisible by 3
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Q: What is the probability of Sunday in a week
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Q: What is 12800 km rounded to the nearest 1000 km
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Q: What is the relationship between the probability of a simple event and its complement
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Q: Is the uniform probability distribution is symmetric about the mean and median
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Q: What does the measure of central tendency describe in a data set
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Q: Do i say can i have samples about them or samples of them
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Q: Who invented probability and statistics
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Q: When would it always make the most sense for an ecologist to use sampling
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Q: How many different numbers can you make using only the digits 3 and 4
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Q: What is the standard deviation for the following numbers 100 76 68 80 56 64 72 52 84 40 60 72 56 64 36 52 76 44 60 80 56 48 68 76 84
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Q: When two dice are rolled find the probability of getting a sum less than 10
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Q: What is the probability that z is greater than .5
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Q: What is the probability that a randomly selected person will be both over 50 and female
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Q: What is theoretical probability and theoretical probability
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Q: What is the probability of numbers 5 and above
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Q: You pick a card at random, put it back, and then pick another card at random.What is the probability of picking a 3 and then picking a 3
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Q: Your friend hides a dollar bill under one of three plastic cups. Under the other two cups is a paper clip. You get to keep whatever is under the cup you choose, but you don't know which contains the dollar bill. Should you switch to the other cup
2 answers
Q: What is the probability in picking a vowel in mathematical
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Q: The probability of an impossible event is ______ or ____.
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Q: In a large population, 54 % of the people have been vaccinated. If 5 people are randomly selected, what is the probability that AT LEAST ONE of them has been vaccinated
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Q: Which of these is the best description of a random sample
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Q: How do you compute the probability Y and gt you given a random variable Y has a normal distribution with mean m and variance s2.
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Q: How many different ways can the letters of committee be arranged
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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.
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Q: What is True about mutually exclusive events
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Q: In a company there are 11 executives: six women five men. Four are selected at attend a management seminar. Find the probability that all four selected are men.
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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: What is the value of the underlined digit in 75.046
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Q: How data collected in case study method
40 answers
Q: When the production manager finds the average life of her battery-lifetime data, it is an example of what phase of inferential statisticsA. Data OrganizationB. Probability-based Inference C. Data-AnalysisD. Data Gathering
1 answer
Q: Is it possible for a coefficient of variation to be negative Explain.
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Q: Is it possible for a coefficient of variation of a set of data to be zero Explain.
1 answer
Q: What does a correlation of -0.9 mean'
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Q: In a school, 22% of the students are sixth graders. What is the probability that a randomly chosen student will not be a sixth grader
1 answer
Q: Measures of Central Tendency
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Q: What is the main reason for using a data table to collect data
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Q: what- how far does a point on a rolling pin travel after one complete revolution if the rolling pin has a radius of 3.8 centimeters
1 answer
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
1 answer
Q: Which best describes probability
5 answers
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
1 answer
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
1 answer
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
2 answers
Q: What is the probability of picking a card with a vowel on it from a box of cards in which each letter of alphabet is written on a card
2 answers
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
2 answers
Q: A bag contains 3 red marbles 5 blue marbles 8 yellow marbles and 4 black marbles what is the theoretical probability of randomly picking each color marble
1 answer
Q: What is the range of this data set 64 76 46 88 88 43 99 50 55
3 answers
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