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# Psych Stats Week 2 Psych 3301

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This 4 page Class Notes was uploaded by Hannah Wheeler on Thursday September 3, 2015. The Class Notes belongs to Psych 3301 at University of Houston taught by Sonya Stokes in Fall 2015. Since its upload, it has received 50 views.

## Reviews for Psych Stats Week 2

Lectures notes?? Yes please! Looking forward to the next set!

-*Lauren Heidenreich*

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Date Created: 09/03/15

Notes From Week 2 Distributions There are four different ways to visually describe one variable Frequency Table Grouped Frequency Table Frequency Histogram Frequency Polygon Frequency Table Visua depiction of data that shows how often each value has occurred that is by how many scores were at each value Vaues are listed in one column and the numbers of individuals with scores at that value are listed in the second cmumn Frequency Distribution Describes the pattern of a set of numbers by displaying a count or proportion for each possible value of a variable Raw Score A data point that hasn t been transformed or analyzed 0 Grouped Frequency Table A visual depiction of data that reports frequencies within a given interval rather than the frequencies for a speci c value 0 Frequency Histogram Histogram A graph that looks like a bar graph but depicts just one variable usually based on scale data with the values of the variables on the xaxis and the frequencies on the y axis 0 Frequency Polygon A line graph with the xaxis representing values or midpoints of intervals and the yaxis representing frequencies a dot is placed at the frequency for each value or midpoint and the dots are connected Shapes Of Distributions Normal Distribution A speci c frequency distribution that is a bell shaped and symmetric curve 0 Skewed Distribution A Distribution in which one of the tails of the distribution is pulled away from the center Two types of Skewed Distribution Positive Tail is aiming towards the right May represent oor effects Negative Tail aims to the left May represent ceiling effects Floor Effects A situation in which a constraint prevents a variable from taking values below a certain point Ceiling Effects A situation in which a constraint prevents a variable from taking on values above a given number Stem and Leaf Plot 0 Stern and Leaf Plot s a graph that displays all the data points of a variable or of two lvels of a variable both numerically and visually Notes From Week 2 Distributions There are four different ways to visually describe one variable Frequency Table Grouped Frequency Table Frequency Histogram Frequency Polygon Frequency Table Visua depiction of data that shows how often each value has occurred that is by how many scores were at each value Vaues are listed in one column and the numbers of individuals with scores at that value are listed in the second cmumn Frequency Distribution Describes the pattern of a set of numbers by displaying a count or proportion for each possible value of a variable Raw Score A data point that hasn t been transformed or analyzed 0 Grouped Frequency Table A visual depiction of data that reports frequencies within a given interval rather than the frequencies for a speci c value 0 Frequency Histogram Histogram A graph that looks like a bar graph but depicts just one variable usually based on scale data with the values of the variables on the xaxis and the frequencies on the y axis 0 Frequency Polygon A line graph with the xaxis representing values or midpoints of intervals and the yaxis representing frequencies a dot is placed at the frequency for each value or midpoint and the dots are connected Shapes Of Distributions Normal Distribution A speci c frequency distribution that is a bell shaped and symmetric curve 0 Skewed Distribution A Distribution in which one of the tails of the distribution is pulled away from the center Two types of Skewed Distribution Positive Tail is aiming towards the right May represent oor effects Negative Tail aims to the left May represent ceiling effects Floor Effects A situation in which a constraint prevents a variable from taking values below a certain point Ceiling Effects A situation in which a constraint prevents a variable from taking on values above a given number Stem and Leaf Plot 0 Stern and Leaf Plot s a graph that displays all the data points of a variable or of two lvels of a variable both numerically and visually

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