One-Variable Data
The middle value of a data set when the data are arranged in ascending order.
What is the median?
The formula to find the range of a data set.
What is max - min?
The total area under the standard normal curve.
What is 1?
The term used to describes a sample that accurately reflects the population it represents.
What is a representative sample?
The sum of all probabilities in a probability distribution.
What is 1?
A type of graph displays the frequency of data using bars.
What is a histogram?
The measure of spread that is equal to the square root of the variance.
What is standard deviation?
In a normal distribution, the percent of data that lies within one standard deviation of the mean.
What is 68%?
This type of sampling method gives every member of the population an equal chance of being selected.
What is a simple random sample?
The term used to describe events that cannot occur simultaneously.
What is mutually exclusive
The measure of center that is affected most by extreme values.
What is the mean?
The name given to the middle 50% of a data set.
What is interquartile range?
The z-score that corresponds to the 50th percentile in a standard normal distribution.
What is 0?
In data collection, the type of bias that occurs when participants choose whether to participate.
What is voluntary response bias?
If the occurrence of event A does not affect the occurrence of event B, then A and B are said to be this.
What are independent events?
A frequency plot that is best used with small datasets.
What is a dotplot?
The number of standard deviations a value is from the mean of the data set.
What is a z-score?
The two parameters that fully define a normal distribution?
The type of sampling where the population is divided into groups, and an entire group is sampled.
What is cluster sampling?
This probability distribution models the number of trials needed to achieve the first success in a sequence of independent Bernoulli trials, where the probability of success is constant for each trial.
What is the geometric distribution?
A visual representation of the 5-number summary.
What is a boxplot?
Mean and median are a measure of this 2-word descriptor.
What is central tendency?
The proportion of data in a normal distribution that lies between
z=-2.5 and z=1.5 .
What is 0.9270?
An unmeasured variable that may affect the outcome of a study.
What is a confounding variable?
In a game where you roll a fair die, you win $10 if the roll is 5 or 6, and you lose $4 if the roll is 1, 2, 3, or 4. What is the expected value of your winnings per roll?
What is $0.67?