BA Chapter 3b (pages 65-81)

Question 1

Column and Bar Charts

Answer 1

Column charts: vertical bars

Bar charts: horizontal bars

Question 2

Line chart

Answer 2

Display data over time

Question 3

Statistic

Answer 3

A statistic is a summary measure of data.

Question 4

Descriptive statistics

Answer 4

Refers to methods that describe and summarize data.

Question 5

Pie chart

Answer 5

Display relative proportion of each data source to the total.

Question 6

Area chart

Answer 6

Combines the features of line charts with those of pie charts.

Question 7

Scatter chart

Answer 7

The only chart shows the relationship between 2 variables.

Question 8

Frequency distribution

Answer 8

A table that shows the number of observations in each of several non-overlapping groups.

Question 9

Relative frequency

Answer 9

Express the frequencies as a fraction, or proportion, of the total.

Question 10

Relative frequency distribution

Answer 10

A tabular summary of the relative frequencies of all categories. Shown as percentages.

Question 11

Histogram

Answer 11

Histogram shows frequency distribution in the form of a column chart.

Question 12

Cumulative relative frequency

Cumulative relative frequency distribution

Answer 12

Represents the proportion of the total number of observations that fall at or below the upper limit of each group.

A tabular summary of cumulative relative frequencies is called a cumulative relative frequency distribution.

Question 13

Kth percentile

Answer 13

A value at or below which at least k percent of the observations lie.

Question 14

Quartiles

Answer 14

Quartiles break the data into 4 parts.

Q1 = The 25th percentile = The first quartile

Q2 = The 50th percentile = The second quartile

Q3 = The 75th percentile = The third quartile

Q4 = The 100th percentile = The fourth quartile

Question 15

Cross-tabulation

Answer 15

• Tabular method that displays the number of observations in a data set for different subcategories of two categorical variables.
• A cross-tabulation table is often called a contingency table.
• Cross tabulation is a tool that allows you compare the relationship between two variables.
• Subcategories must be
  
  • Mutually Exclusive (cannot overlap)
  • Collectively Exhaustive (no subcategory left out)

Question 16

Pivot Tables allow:

Answer 16

• Quick creation of cross-tabulations
• Numerous custom-made summary tables and charts

Question 17

Creat Pivot Chart to:

Answer 17

To visualize data in Pivot Table.