Investigating Data

Question 1

Frequency distribution is positive if the tails goes to the…

Answer 1

Right

Question 2

Frequency distribution is negative if the tail goes to the…

Answer 2

Left

Question 3

Frequency distribution is equal if….

Answer 3

The data is equal on each side

Question 4

What does skewed mean?

Answer 4

The data is bunched on one end more than the other

Question 5

What are quartiles?

Answer 5

Q1/QL, Q2, Q3, Q4, Q5/QH

Question 6

What is the interquartile range?

Answer 6

Q3 minus Q1

Question 7

What do box plots show?

Answer 7

The five number summary

Question 8

What are parallel box plots?

Answer 8

A box plot that has two or more on top of one another and they use the same scale.

Question 9

What is the mean?

Answer 9

The average

Question 10

What is the mode

Answer 10

The most common score

Question 11

What is the median

Answer 11

The middle score

Question 12

What is the range

Answer 12

The highest score minus the lowest score

Question 13

What is bivariate date?

Answer 13

The data that measures 2 variables

Question 14

What do strong scatter plots look like

Answer 14

The points are closer together

Question 15

What do weak scatter plots look like

Answer 15

The points are spread out

Question 16

What do perfect scatter plots look like

Answer 16

The points that lie in a straight line

Question 17

When is time the independent variable

Answer 17

In bivariate data involving time

Question 18

What do you need to consider when you use media surveys?

Answer 18

• Where the news comes from and the samples statistics based on
• Who supplied the information
• The number of samples and sample size used
• The way the data is presented