The information in this list was taken from slides prepared by Professor Herman Bennett of the Harvard Kennedy School. This list will cover the following:→What data are
» Observation, variable, population, sample
→How to graphically represent data
» Histograms and distributions
→How to describe data features in a single number
» Descriptive statistics: mean, variance, standard deviation, etc
→How to describe the relationship between two variables
» Covariance and correlation
» Correlation and causality

32 語中 1～32番目

問題	解答▼	出題数	習得度	苦手度
Measures how far an observation is from the mean of the dist	Z-Score	-	-	-
Gives the number below which X% of the data lies.	Xth percentile	-	-	-
The average of squared deviations from the mean	Variance	-	-	-
A characteristic recorded for each observation.	Variable	-	-	-
A distribution with one peak.	Unimodal Distribution	-	-	-
The diminishing ends of a distribution.	Tails	-	-	-
A distribution with symmetric tails.	Symmetric Distribution	-	-	-
Any number that is a function of the data	Statistic	-	-	-
Graphs each observation as one dot, using the X-axis for one	Scatter Plot	-	-	-
A collection of obser vations comprising only a subset of th	Sample	-	-	-
The collection of ALL relevant observations.	Population	-	-	-
A statistical observation that is markedly different in valu	Outlier	-	-	-
The unit of analysis; e.g.: an individual, a political juris	Observation	-	-	-
A variable that is itself a number (i.e. income, age, # of k	Numerical Variable	-	-	-
The peak in a distribution.	Mode	-	-	-
The most repeated value	Mode	-	-	-
The value of the variable for the middle observation when ob	Median	-	-	-
Measures that provide information that describes individual	Measures of Dispersion	-	-	-
A common measure that best describes the middle or center of	Measures of Central Tendency	-	-	-
The arithmetic average of all values of a variable in the da	Mean	-	-	-
A barchart which displays the frequency of observations in a	Histogram	-	-	-
A special case of categorical variable that takes the value	Dummy Variable	-	-	-
The entire collection of observations and variables that are	Dataset	-	-	-
Numerical representations of phenomena we observe in the wor	Data	-	-	-
A histogram that plots the fraction of observations in the d	Cumulative Frequency Distribution	-	-	-
The basic statistic to measure the relationship between two	Covariance	-	-	-
Denoted by r, it allows comparisons between covariances by d	Correlation Coefficient	-	-	-
Ratio of the standard deviation of the data set to the mean.	Coefficient of Variation	-	-	-
measures the symettry of a data set around the mean.	Coefficient of Skewness	-	-	-
A variable that is itself not a number, but datasets represe	Categorical Variable	-	-	-
A common tool used to summarize data by organizing it into r	Bins	-	-	-
A distribution with two peaks.	Bimodal Distribution	-	-	-

32 語中 1～32番目