Vocab
The group of all subjects under study is called a(n)
What is a population?
What are the boundaries for 23.4 ounces?
23.35 - 23.45 ounces
Number of trash bags sold in a fundraiser
What is ratio?
When data are categorized as, for example, classification of cars (compact, subcompact, standard, luxury), the most appropriate measure of central tendency is the
What graph should be used to show the relationship between the parts and the whole?
What is a pie graph?
A group of subjects selected from the group of all subjects under study is called a(n)
What is a sample?
What are the boundaries for 0.92 mm?
0.915 - 0.925 mm
Pizza size (Small, Medium, Large)
What is ordinal?
The number of ads on a one-hour television show is what type of data?
What is discrete?
A study that involves no researcher intervention is called
What is an observational study?
The positive square root of the variance is called the
What is the standard deviation?
What are the boundaries for 7.4 - 7.9?
7.35 - 7.95
Weights of suitcases on a commercial airliner
What is ratio?
Except for rounding errors, relative frequencies (decimal percents) should add up to what sum?
What is 1?
What does the five-number summary consist of?
What are the minimum value, Q1, Q2, Q3, maximum value?
The symbol for the population standard deviation is
sigma
In a frequency distribution, the number of classes should be between
What are 5 and 20?
Automobile colors
What is nominal?
P50 corresponds to what value?
What is Q2?
A statistic that tells the number of standard deviations a data value is above or below the mean is called
What is a z-score?
A variable that interferes with other variables in the study is called
What is a confounding variable?
Data such as blood types (A, B, AB, O) can be organized into what type of frequency distribution?
What is a categorical distribution?
Temperature for each day in February
What is interval?
When a distribution is bell-shaped, approximately what percentage of data values will fall within 1 standard deviation of the mean?
What is 68%?
A researcher divided subjects into two groups according to gender and then selected members from each group for her sample. What sampling method was the researcher using?
What is stratified?