# Recent questions tagged data

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How is missing data handled in statistics?
How is missing data handled in statistics?How is missing data handled in statistics? ...
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What is observational and experimental data in statistics?
What is observational and experimental data in statistics?What is observational and experimental data in statistics? ...
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What are the 5 steps for qualitative data analysis?
What are the 5 steps for qualitative data analysis?What are the 5 steps for qualitative data analysis? ...
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What is considered credit management?
What is considered credit management?What is considered credit management? ...
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In Canadian five-pin bowling, the maximum score per game is $450 .$ Alexandria just finished bowling a game of $321 .$ What percentage of a perfect score does this represent?
In Canadian five-pin bowling, the maximum score per game is $450 .$ Alexandria just finished bowling a game of $321 .$ What percentage of a perfect score does this represent?In Canadian five-pin bowling, the maximum score per game is $450 .$ Alexandria just finished bowling a game of $321 .$ What percentage of a perfect sc ...
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What is an example of stratified sampling?
What is an example of stratified sampling?What is an example of stratified sampling? ...
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What are the steps in a data analysis process?
What are the steps in a data analysis process?What are the steps in a data analysis process? ...
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What are the steps in the data science process?
What are the steps in the data science process?What are the steps in the data science process? ...
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What is the structure of statistics as a subject?
What is the structure of statistics as a subject?What is the structure of statistics as a subject? ...
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A sample of size 64 is drawn by simple random sampling from a normal population which has known variance 4 .
A sample of size 64 is drawn by simple random sampling from a normal population which has known variance 4 .A sample of size 64 is drawn by simple random sampling from a normal population which has known variance 4 . The sample mean is $-0.45$. Test the hypo ...
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Derive a $95 \%$ confidence interval for the mean conversation length. Test whether the mean length of a conversation is eight minutes.
Derive a $95 \%$ confidence interval for the mean conversation length. Test whether the mean length of a conversation is eight minutes.A firm investigates the length of telephone conversations of their office staff. Ten consecutive conversations had lengths, in minutes:  \text { 10. ...
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Multiples of 7 are written next to each other $714212835 \ldots$. Find 2020 th digit.
Multiples of 7 are written next to each other $714212835 \ldots$. Find 2020 th digit.Multiples of 7 are written next to each other $714212835 \ldots$. Find 2020 th digit. ...
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A random sample is taken and the sample size is $25 .$ The sample is normally distributed, the sample mean is 89 , and the standard deviation is $5.5 .$ Find a $90 \%$ confidence interval for the population mean.A random sample is taken and the sample size is $25 .$ The sample is normally distributed, the sample mean is 89 , and the standard deviation is $5.5 ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 The mean of the medical test is$72.21$with the standard deviation of$2.5 .$Find a$95 \%$confidence interval for a random sample of 25 students with the following scores. 0 answers 599 views The mean of the medical test is$72.21$with the standard deviation of$2.5 .$Find a$95 \%$confidence interval for a random sample of 25 students with the following scores.The mean of the medical test is$72.21$with the standard deviation of$2.5 .$Find a$95 \%$confidence interval for a random sample of 25 students w ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 An insurance company knows that the average insured value of the house policies it holds is \$253255 with a standard deviation of \$40648. 1 answer 78 views An insurance company knows that the average insured value of the house policies it holds is \$253255 with a standard deviation of \$40648. An insurance company knows that the average insured value of the house policies it holds is \$253255 with a standard deviation of \$40648. It takes ... close 0 answers 60 views A psychologist examined the effect of chronic alcohol abuse on memory. In this study, a standardized memory test was used. Scores on this test for the general population from a normal distribution with$\mu=50$and$\sigma=6$.A psychologist examined the effect of chronic alcohol abuse on memory. In this study, a standardized memory test was used. Scores on this test for the ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 A principal at a certain school claims that the students in his school are above average intelligence. A random sample of thirty students IQ scores have a mean score of 112. 1 answer 815 views A principal at a certain school claims that the students in his school are above average intelligence. A random sample of thirty students IQ scores have a mean score of 112.A principal at a certain school claims that the students in his school are above average intelligence. A random sample of thirty students IQ scores ha ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 How do I calculate percentile rank? 1 answer 141 views How do I calculate percentile rank?How do I calculate percentile rank? ... close Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993 Your test mark is$72 \%$and, in your class of 20 students, nobody else has the same mark as you. There are two people with a higher mark. What is your percentile rank? 0 answers 74 views Your test mark is$72 \%$and, in your class of 20 students, nobody else has the same mark as you. There are two people with a higher mark. What is your percentile rank?Your test mark is$72 \%$and, in your class of 20 students, nobody else has the same mark as you. There are two people with a higher mark. What is yo ... close 0 answers 57 views Your test mark is$77 \%$and one other person has the same mark as you in your class of 25 students. There are 21 people with a lower test mark than you. What is your percentile rank?Your test mark is$77 \%$and one other person has the same mark as you in your class of 25 students. There are 21 people with a lower test mark than ... close 0 answers 65 views Your test mark is$80 \%$and three other people in your class of 50 students have the same mark as you. There are 28 people with a lower test mark than you. What is your percentile rank?Your test mark is$80 \%\$ and three other people in your class of 50 students have the same mark as you. There are 28 people with a lower test mark th ...
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What is quota sampling?
What is quota sampling?What is quota sampling? ...
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What is cluster sampling?
What is cluster sampling?What is cluster sampling? ...
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How can data analysts use the "Table of random numbers" to achieve random sampling?