Data & Variables
Central Tendency
Dispersion
Introduction
Correlation
100
The Response variable in a study of Caffeine dosage vs. GPA
What is GPA?
100
A normal distribution is also called a _____ curve, named after its shape where all 3 measures of central tendency align in the middle and gradually flatten out.
What is Bell?
100
The correlation between Standard Deviation and Variability of data. (positive or negative)
What is positive?
100
Actual values of collected information in a statistical survey; plural of 'datum'
What is Data?
100
In a scatterplot of n variables, there are ____ points.
What is n?
200
The two types of data
What is categorical and quantitative (numeric)?
200
The three measures of central tendency.
What is Mean, Median, and Mode?
200
Range of {1, 2, 3, 4, 5}
What is 4?
200
The ultimate goal of statistics is to aid ____________.
What is decision-making? (Or some variety of this)
200
Range of correlation coefficient (r).
What is [1, 1]?
300
Two types of Quantitative (numeric) variables
What is Continuous and Discrete?
300
Capital greek letter is used to denote summation.
What is sigma?
300
According to the empirical rule, in a normal distribution, 95% of all data fall within ___ standard deviations from the mean.
What is 2?
300
The characteristic or measurement that can be determined for each member of a population.
What is Variable?
300
The closer the correlation coefficient is close to ____, the weaker the correlation is.
What is 0?
400
Commonly used to display distributions, with the x-axis being class intervals and the y-axis being frequency.
What are histograms?
400
The mode and median of this data set:
{10, 11, 14, 10, 15, 17, 19}
What are 10 and 14?
400
Relationship between Variance and Standard Deviation: variance is the ______ of the s.d.
What is square?
400
Two broad categories of Statistics. (starts wit d & i)
What are descriptive and inferential?
400
The slope of a regression line and the correlation coefficient share the same _________.
What is Sign?
500
The categories of (Very poor -> Poor -> Fair -> Good -> Excellent) are ordered. The name for these kinds of variables.
What is ordinal?
500
Type of skew that shows up in frequency distribution like this.
What is negative skew?
500
Theorem that states: The distribution of sample means approximates a normal distribution as the sample size (n) gets larger, regardless of the population's distribution
What is Central Limit Theorem?
500
Statistic is to Sample as _________ is to Population.
What is Parameter?
500
The standard form of a regression line (prediction equation).
What is ลท = a + bx?