Week 2: Descriptive Analysis Of Categorical Data

Question 1

Descriptive analysis of categorical data

Answer 1

1) Frequency distributions
2) Study of the shape of data
3) Mode
4) Measures of variability

Question 2

Frequency distributions are shown as

Answer 2

1) Tables or 2) graphs (bar charts and pie charts)

Question 3

Frequency distributions give information about

Answer 3

More or less frequent categories

Question 4

A pie chart displays

Answer 4

Relative frequencies or percentages of categorical data

Question 5

Cross tabulation

Answer 5

(Considering two qualitative or categorical variables )

Bivariate frequency distribution

Question 6

A cross tabulation shows

Answer 6

The join frequency distribution and two marginal frequency distributions, one for each variable

Question 7

Percentages are calculated by

Answer 7

Dividing counts by the sample size and multiplying by 100

Question 8

Bivariate frequency distributions allow us to examine

Answer 8

Relationships between variables

Question 9

Descriptive analysis of categorical data (shape of data)

Answer 9

1) study of the shape of data an 2) mode

Question 10

Detected shapes of data when observing frequency distributions:

Answer 10

1) uniform 2) non uniform and unimodal 3) non uniform and multimodal

Question 11

The percentage of the mode can be used as a

Answer 11

Measure of variability

Question 12

When the distribution is fairly uniform

Answer 12

The percentage of the mode will be quite low denoting high variability

Question 13

When the distribution is not uniform and the percentage of the mode is high

Answer 13

The statistical units are less spread all over categories denoting low variability