ScienceMathStates Test 1
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States Test 1

Yusif Barnes avatar Yusif Barnes
7 September 2022
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19 test answers

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question
Find the median: Find the median(even) :
Find the median: Find the median(even) :
answer
-The Number that is in the middle. -If there is an even number add the two middle # then divide by two
question
Sample variance
Sample variance
answer
Xi= The sample variance is found by squaring the sample standard deviation.
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Find the mode:
Find the mode:
answer
-The middle
question
m(mew)
m(mew)
answer
The population arithmetic mean), is computed using all the individuals in a population. The population mean is a parameter.
question
x?
answer
The sample arithmetic mean, x (pronounced "x-bar"), is computed using sample data. The sample mean is a statistic.
question
Frequency distribution
Frequency distribution
answer
1st-Add the first two numbers and divide by 2 2nd- Input into calculator to find the separate by two list 3rd-Make sure to enter L1,L2 to find the information
question
Standard deviation for sample
Standard deviation for sample
answer
-s orsx
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Standard deviation( to look for on calculator)
Standard deviation( to look for on calculator)
answer
-
question
Histogram skewed right pg-132
Histogram skewed right pg-132
answer
-Mean>Median -Mean is larger than median
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Histogram skewed left
Histogram skewed left
answer
-Mean
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Histogram symmetric
Histogram symmetric
answer
-Mean=Median -Empirical rule -Equal
question
Histogram depicts data witha higher standard deviation?Why?
Histogram depicts data witha higher standard deviation?Why?
answer
Histogram B depicts the higher standard deviation,because the distribution has more dispersion.
question
Mean
Mean
answer
-The Average
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Mode
Mode
answer
-The most
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Standard deviation
Standard deviation
answer
-Why do we square before summing them? Squaring makes each term positive, so that the mean does not cancel values -What would happend if we didnt?
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Chebychev's Theorem
Chebychev's Theorem
answer
1st- Find the percentage using the formula 2nd-Use the formula ? ± k?
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Empirical rule how to:
Empirical rule how to:
answer
1st-Make sure it is bell shaped 2nd- Figure out which percentage=? 3nd- ? ± ?? (Mean±?(standard deviation)
question
Empirical Rule match : Standard deviation 1- Standard deviation 2- Standard deviation 3-
answer
Standard deviation 1-68-Split on both sides Standard deviation 2-95-Split on both sides Standard deviation 3-99.7-Split on both sides (Mean±#(standard deviation)
question
What do we mean when we say tha the median is more resistant to extreme values than the mean.Give an example of this.
answer
Very large or small data do not affect its value substantially. Page-132