Formula Quiz 1
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | an object described by a set of data
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| variable | show 🗑
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| show | a variable that takes on a numerical value that can be measured
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| quantitative data | show 🗑
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| show | a variable that places an individual into a category
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| show | indicates what values a variable takes on and the frequency at which it takes these values
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| show | pie chart, bar chart
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| bar chart | show 🗑
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| pie chart | show 🗑
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| graphs of quan. | show 🗑
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| show | quan.
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| show | quan.
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| stemplot | show 🗑
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| show | an individual observation that falls outside the overaell pattern of the graph
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| show | has the same shape as a histogram with the exception that the vertical axis measures relative frequencies instead of frequencies
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| key features of a histogram | show 🗑
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| shapes of a graph. | show 🗑
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| show | sample mean, mode, median
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| show | arithmetic average or arkithmetic mean
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| show | element or elements that occur most often
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| show | "the middle number"/average of two middle numbers
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| median position formula | show 🗑
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| mean=median when... | show 🗑
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| when it is skewed right | show 🗑
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| show | the median is dragged to the left
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| show | range, iqr, five number summary, the variance and the sample standard deviation
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| range | show 🗑
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| show | IQR= Q3-Q1
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| five number summary | show 🗑
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| variance | show 🗑
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| standard deviation (equation) | show 🗑
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| standard deviation (definition) | show 🗑
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| xi-xbar | show 🗑
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| the sum of all the deviations of the mean | show 🗑
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| st. dev. is .... to outliers | show 🗑
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| show | degrees of freedom
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| show | it lies mroe than one a half iqr ranges before q1 or above q3
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| boxplot | show 🗑
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| modified boxplot | show 🗑
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| show | can be used to compare the distributions of to data sets
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| within one standard deviation of the mean | show 🗑
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| two sample standard deviations from the mean | show 🗑
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| show | about 99.7% of the data wqill fall
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| z-score | show 🗑
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| show | x-xbar/s
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| sample mean of a z-score is | show 🗑
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| the sample dev of a zcore is | show 🗑
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| show | is the nunber of observations less than or equal to a given number
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| show | cumulative frequency divded by the toal number ofobservations
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| show | is a graph of the cumulative relative frquency vs. the raw data in the sample
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| show | a curve that always lies on or above the horizontal axis and has area exactly of 1 underneath
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| median of a density curve | show 🗑
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| show | the point at which the curve would balance if it was made of a solid material
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| the standard normal distribution is..(mean/st. dev.) | show 🗑
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| conversation formula is used | show 🗑
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| conversation formula (actual form) | show 🗑
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| show | the number of standard deviations between anobservation x and the mean mu of the data set
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| normal quantile plot | show 🗑
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| a data set is approximately normal when its | show 🗑
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| show | the explanatory varaible
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| dependent variable y | show 🗑
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| show | positive association, negative association or neither
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| show | direction, form, strength of relationship, and outliers
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| correlation coefficient measures | show 🗑
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| formula for r | show 🗑
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| the correclation coefficient r is always a number between | show 🗑
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| if r is positive then | show 🗑
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| if r=1 then | show 🗑
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| if r is negatrive then | show 🗑
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| show | x and y have a perfect negative correlation
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| least squares regression lineis the equation.. | show 🗑
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| show | yhat=bnaught+b1x
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| bnaught is.. | show 🗑
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| b1 is... | show 🗑
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| equation for b1 | show 🗑
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| show | ybar-b1xbar
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| ybar | show 🗑
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| x bar is | show 🗑
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| the difference between y and yhat is called | show 🗑
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| residual is | show 🗑
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| show | is a point on every regression line
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| rsquared is | show 🗑
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| show | the variation in y that is explained by y's linear association with x
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| show | the residuals on the vertical axis and either the explanatory, response or preodicted response values on the horizontal
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| show | have a mean of 0
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| show | corresponds to the regresson line
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| an observation is influential if | show 🗑
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Created by:
lilee256
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