# States Test 1

## Unlock all answers in this set

question Find the median: Find the median(even) :
-The Number that is in the middle. -If there is an even number add the two middle # then divide by two
question Sample variance
Xi= The sample variance is found by squaring the sample standard deviation.
question Find the mode:
-The middle
question m(mew)
The population arithmetic mean), is computed using all the individuals in a population. The population mean is a parameter.
question
x?
The sample arithmetic mean, x (pronounced "x-bar"), is computed using sample data. The sample mean is a statistic.
question Frequency distribution
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
-s orsx
question Standard deviation( to look for on calculator)
-
question Histogram skewed right pg-132
-Mean>Median -Mean is larger than median
question Histogram skewed left
-Mean
question Histogram symmetric
-Mean=Median -Empirical rule -Equal
question Histogram depicts data witha higher standard deviation?Why?
Histogram B depicts the higher standard deviation,because the distribution has more dispersion.
question Mean
-The Average
question Mode
-The most
question Standard deviation
-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?
question Chebychev's Theorem
1st- Find the percentage using the formula 2nd-Use the formula ? ± k?
question Empirical rule how to: