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Catching Z's
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100
The formula that converts a data point over to the standard normal distribution so that we can use the z table?
What is z = (x - mean) / std deviation
100
If the population mean is 30 and the population standard deviation is 7.5, change 42 into a z-score.
What is 1.6
100

Find the interquartile range for the data set: 12, 14, 11, 10, 9, 10, 9

What is the IQR = 3 - put the numbers in order from least to greatest - find the median - find the difference between the first quartile (9) and third quartile (12)

100

Neither the subject nor those who measure the response variable know which treatment a subject received.

double blind

100
The symbol for a population mean
What is mu?
200
Using z scores (or the z table) is appropriate for data with this shape
What is normal or bell-shaped data
200
If the z-score for x=28 is -.5 and the population standard deviation is 8, what is the population mean?
What is 32?
200

Find the interquartile range, round to the nearest tenth if necessary: 5, 2, 4, 7, 4, 4, 1

3

200

The group that does NOT receive the treatment

control group

200
The symbol for a population standard deviation
What is sigma? (looks like a sideways 6)
300
The mean and standard deviation of the standard normal distribution?
What is mean = 0 and standard deviation = 1?
300
Find the z-score for which 20% of the area lies to the left.
What is .84 ?
300

Find the mean of the following set of data: 13, 23, 21, 20, 21, 24, 18

What is the mean is 20

300

A soccer team is choosing their starting lineup for a game. The team has 20 players. Is this a combination or a permutation situation?

combination

300
The symbol typically used for "sample size"
What is "n" ?
400
Use the standard normal distribution to find P(z<-1.5 OR z>2).
What is .0896 ?
400
Find the z-score for which 10% of the data lies to the right.
What is 1.28 ?
400

What is the mode: 10, 9, 4, 4, 8, 8, 8, 4, 7, 6, 11, 14, 27

What is 4 & 8

400

A group of 5 students are chosen from a class of 12 students.  How many possible groups of 5 are there?

792

400
IQ scores are normally distributed with a mean of 97 and a standard deviation of 11. An individual's IQ score is found to be 110. Find the z-score corresponding to this value.
What is z = 1.18 ?
500
Tells us how many standard deviations above or below the mean a data value is.
What is a z-score?
500
Find the z-scores for which 96% of the distribution's area lies between -z and z.
What is 2.05 and -2.05?
500

Frank has 3 nickels, 5 dimes, and 2 quarters. Find the mean, median, mode and range of the values of Frank's coins.

What is: mean: 11.5 cents median: 10 cents mode: 10 cents range: 20 cents

500

The amount of corn chips dispensed into a 48-ounce bag by the dispensing machine has been identified as possessing a normal distribution with a mean of 48.5 ounces and a standard deviation of 0.2 ounce. What chip amount represents the 67th percentile for the bag weight distribution?

What is 48.59 ounces?

500
The symbols for a SAMPLE mean and a SAMPLE standard deviation...
What is x-bar (x with a line on top) for mean AND s for standard deviation