Statistics Matching

Definition: The study of data: how to collect, summarize and present it.

• Variable

• Statistics

• Outliers

• Data

Definition: How often a number occurs.

• Interpret A Graph

• Outliers

• Variable

• Frequency

Definition: Collection of numbers for a specific measurement (question).

• Statistics

• Nonlinear Association

• Data

• Variable

Definition: Collection of facts for two different measurements (questions).

• Qualitative data

• Frequency data

• Univariate data

• Bivariate data

• 1.5

• 2.5

• 3.5

• 5

What is the difference between the medians for the two data sets? 

• 0 tickets

• 2 tickets

• 4 tickets

• 6 tickets

How many classes are in this table?

• 1

• 2

• 3

• 4

Choose the correct frequency distribution table for the data on height (cm) of 20 girls using the class intervals 130 - 135, 135 - 140 and so on. The heights of the girls in cm are: 139, 138, 144, 147, 165, 142, 149, 155, 149, 141, 134, 136, 131, 146, 160, 153, 133, 148, 140, 138

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Answer explanation

Given above are marks obtained by 20 students in Math out of 25, presented in grouped frequency distribution table. Identify the lower class boundary for each class.

• 11, 16, 21

• 11.5, 16.5, 21.5

• 10.5, 15.5, 20.5

• 15.5, 20.5, 25.5

The frequency distribution of weights (in kg) of 50 persons is given. What are the class marks of all the class interval?

• 30, 40, 50, 60, 70

• 35, 45, 55, 65, 75

• 30.5, 40.5, 50.5, 60.5, 70.5

• 35.5, 45.5, 55.5, 65.5, 75.5

Answer explanation

Class mark = (Lower limit + Upper limit)/2 1) (30 + 40)/2 = 35 2) (40 + 50)/2 = 45 3) (50 + 60)/2 = 55 4) (60 + 70)/2 = 65 5) (70 + 80)/2 = 75