Research Methods: Presentation of Data - Graphs & Distributions Flashcards
Name the three types of distributions
Positive Skewed, Negative Skewed and normal
What are the three features of a normal distribution?
Curve is symmetrical
Curve extends outward but never touches zero
The mean, median and mode occupy the same mid-point on the curve
If most of the data is concentrated on the left of the graph. Which type of distribution is this?
Positive Skewed
Which type of distribution is to if the long tail of the graph is on the right of the peak of the data?
Positive Skewed
A teacher set as hard test so most people got low marks. Which type of distribution is this?
Positive Skewed
A teacher set an easy test so most students got high marks. Which type of distribution is this?
Negative Skewed
Which type of distribution is it when most of the data is concentrated on the right of the graph?
Negative Skewed
Which type of distribution is it if the long tail is on the left side of the peak of data?
Negative Skewed
When drawing a distribution. Which three things do you plot?
Mean, Mode and Median
When drawing a distribution curve, Which piece of data do you plot first?
Mode
A researcher gave participants a questionnaire where the maximum score was 50. The data gained was Mode - 23
Mean -22.3
Median 22.6
Which type of distribution is this?
Normal distribution - as the mean, mode and median are almost the same
A questionnaire was given to participants where the maximum score was 50. The data gained was:
Mode - 15
Mean - 25
Median -22
Which type of distribution is this?
Positive Skewed - because the mean is higher than the median/mode or to the right hand side of the distribution
A researcher gave participants a questionnaire to complete where the maximum score was 50. The data gained was:
mode - 39
Mean - 33.5
Median - 35.6
Which type of distribution is this?
Negative skewed - because the mean is lower than the median/mode or to the left of the distribution
Which type of distribution is this?
Positive Skew
Which type of distribution is this?
Negative skew
A teacher created a test and gained a negative skew in her grade distribution. What could be done to make this a normal distribution?
Make the test more difficult
A teacher created a test that gained a positive skew in her grade distribution. What could be done to gain a normal distribution?
Make the test easier.
Which three types of graphs do you need to know?
Bar chart
Histogram
Scatterplot/scattergram
A student draws a bar chart where the two bars touch. Will they get the mark in the exam?
No
What do you get three marks for in a graph question?
1 - plotting the correct graph
1 - for a title
1 - for labelling the x and y axis
What should he title in a graph contain?
The operationalised IV and DV or operationalised co-variables
A student draws a histogram. The bars are touching. Will they get the mark?
Yes
This type of graph is for continuous data.
Histogram
This type of graph is for discrete data.
Bar chart
