Statistics - Exam 1
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| complete collection of people, objects, scores, etc. to studied | population
🗑
|
||||
| process of getting information from each element of the population | census
🗑
|
||||
| any sub collection of data drawn from a population | sample
🗑
|
||||
| any characteristic of the elements of the population | variable
🗑
|
||||
| tells what values a variable has and how often those values occur | distribution
🗑
|
||||
| value measuring some characteristic of a population | parameter
🗑
|
||||
| value measuring some characteristic of a sample | statistic
🗑
|
||||
| value that splits an ordered data set into 2 halves | median
🗑
|
||||
| value that is far away from the rest of the data set | outlier
🗑
|
||||
| average squared deviations from the elements to the mean | variance
🗑
|
||||
| splits data set into 4 equal groups | quartile
🗑
|
||||
| graph displaying the relationship between 2 variables | scatter plot
🗑
|
||||
| value that measures the strength and direction of a linear relationship between 2 quantitative variables | correlation coefficient
🗑
|
||||
| making predictions with values that are outside the range of x variables | extrapolation
🗑
|
||||
| 3 phases of statistics | gather data, analyze data, make inferences
🗑
|
||||
| 2 characteristics of a good sample | variety, size
🗑
|
||||
| reasons to take a sample | saves time, saves money, destructive measures
🗑
|
||||
| midrange formula | max + min / 2
🗑
|
||||
| variance of a sample symbol | s²
🗑
|
||||
| standard deviation symbol | s
🗑
|
||||
| variance formula | s²= n(Σx²)-(Σx)²/n(n-1)
🗑
|
||||
| standard deviation equals the square root of the _____________ | variance
🗑
|
||||
| slope symbol | b1, a (on calc)
🗑
|
||||
| correlation coeffiecient of a sample symbol | r
🗑
|
||||
| variance of a population symbol | σ²
🗑
|
||||
| y intercept symbol | b0, b (on calc)
🗑
|
||||
| regression equation | y(with a hat)= b1 * x + b0
🗑
|
||||
| standard deviation symbol (on calc) | Sx
🗑
|
||||
| You can get variance by multipling standard deviance (Sx) by ____________ | itself
🗑
|
||||
| variance answers are always ___________ | squared
🗑
|
||||
| number of classes symbol | k
🗑
|
||||
| population mean symbol | µ
🗑
|
||||
| what does a 5 # summary consist of? | min, Q1, Q2 (median), Q3, max
🗑
|
||||
| correlation coefficient formula | n * Σxy - Σx * Σy
r= ---------------------------------
sqr(n*Σx²-(Σx)²)*sqr(n*Σy²-(Σy)²)
🗑
|
||||
| slope formula | n * Σxy - Σx * Σy
b1= ---------------------
n * Σx² - (Σx)²
🗑
|
||||
| y intercept formula | b0 = (mean of y) - b1 * (mean of x)
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
K1N1V
Popular Math sets