Research Methods: Presentation of Data - Graphs & Distributions Flashcards

1
Q

Name the three types of distributions

A

Positive Skewed, Negative Skewed and normal

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2
Q

What are the three features of a normal distribution?

A

Curve is symmetrical
Curve extends outward but never touches zero
The mean, median and mode occupy the same mid-point on the curve

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3
Q

If most of the data is concentrated on the left of the graph. Which type of distribution is this?

A

Positive Skewed

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4
Q

Which type of distribution is to if the long tail of the graph is on the right of the peak of the data?

A

Positive Skewed

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5
Q

A teacher set as hard test so most people got low marks. Which type of distribution is this?

A

Positive Skewed

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6
Q

A teacher set an easy test so most students got high marks. Which type of distribution is this?

A

Negative Skewed

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7
Q

Which type of distribution is it when most of the data is concentrated on the right of the graph?

A

Negative Skewed

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8
Q

Which type of distribution is it if the long tail is on the left side of the peak of data?

A

Negative Skewed

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9
Q

When drawing a distribution. Which three things do you plot?

A

Mean, Mode and Median

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10
Q

When drawing a distribution curve, Which piece of data do you plot first?

A

Mode

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11
Q

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?

A

Normal distribution - as the mean, mode and median are almost the same

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12
Q

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?

A

Positive Skewed - because the mean is higher than the median/mode or to the right hand side of the distribution

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13
Q

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?

A

Negative skewed - because the mean is lower than the median/mode or to the left of the distribution

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14
Q

Which type of distribution is this?

A

Positive Skew

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15
Q

Which type of distribution is this?

A

Negative skew

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16
Q

A teacher created a test and gained a negative skew in her grade distribution. What could be done to make this a normal distribution?

A

Make the test more difficult

17
Q

A teacher created a test that gained a positive skew in her grade distribution. What could be done to gain a normal distribution?

A

Make the test easier.

18
Q

Which three types of graphs do you need to know?

A

Bar chart
Histogram
Scatterplot/scattergram

19
Q

A student draws a bar chart where the two bars touch. Will they get the mark in the exam?

A

No

20
Q

What do you get three marks for in a graph question?

A

1 - plotting the correct graph
1 - for a title
1 - for labelling the x and y axis

21
Q

What should he title in a graph contain?

A

The operationalised IV and DV or operationalised co-variables

22
Q

A student draws a histogram. The bars are touching. Will they get the mark?

A

Yes

23
Q

This type of graph is for continuous data.

A

Histogram

24
Q

This type of graph is for discrete data.

A

Bar chart

25
Q

This type of graph shows the relationship between two variables.

A

Scatterplot/scattergram

26
Q

Which type of graph is this?

A

Histogram

27
Q

Which type of graph is this?

A

Bar Chart

28
Q

Which type of graph is this?

A

Bar chart

29
Q

Which type of graph is this?

A

Scatterplot/scattergram

30
Q

Which type of graph is this?

A

Scatterplot/Scattergram