Math 4 Unit 5 Data Analysis Review

Math 4 - Unit 5

Data Analysis Review

Unit 5 Topics

Measures of Central Tendency - Mean (average), median, mode

Measures of Spread (Variability) - IQR, range

Types of plots - boxplot, dot plot, histogram, relative frequency histogram

Calculate 5-Number summary & boxplot in calculator

Calculate relative frequency from histogram

Statistical question

Variables - qualitative (categorical) vs quantitative (numerical)

Experiment, survey, simulation, observation

Random, biased, systematic, stratefied, cluster, convenient

Multiple Choice

At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the mode.
12,10,10,10,13,12,11,13,10

• 13

• 12

• 11

• 10

Multiple Choice

What is the mean of: 6, 12, 16, 11, 8, 4, 1, 11, 4

• 11

• 6

• 8

• 7

Multiple Choice

What is the median of:
6, 12, 16, 11, 8, 4, 1, 11, 4

• 11

• 6

• 8

• 7

Multiple Choice

Find the median, first quartile, third quartile, and interquartile range of the data.

32, 53, 72, 66, 47, 54, 49, 67, 71

• Median: 54

  First Quartile: 49

  Third Quartile: 67

  IQR: 18

• Median: 54

  First Quartile: 48

  Third Quartile: 69

  IQR: 21

• Median: 54

  First Quartile: 48

  Third Quartile: 69

  IQR: 22

• Median: 54

  First Quartile: 49

  Third Quartile: 69

  IQR: 20

Multiple Choice

If a point was outside of the purple or green line it would represents the ...

• Min

• Max

• Outlier

• Q2

Multiple Choice

Which restaurant has a higher median wait time?

• Lucy's Steakhouse

• Gary's Grill

• They are the same

Multiple Choice

Which of the following is represented by the histogram?

• Of the 20 riders represented in the graph, over 50% are 30 years of age or older.

• One fourth of the riders represented in the graph are younger than 40 years old.

• Half the riders represented in the graph are between the ages 10-29.

• Six percent of the riders represented in the graph are between the ages 10 and 19.

Multiple Choice

Who might be the individuals in this dotplot?

• cereals

• volcanos

• students

• grandparents

Multiple Choice

This is an example of a

• histogram

• dot plot

• frequency table

• relative frequency table

Multiple Choice

Which interval has 300 employees?

• 11-21

• 0-10

• 77-87

• 66-76

Multiple Choice

Choose the statistical question:

• What time did you wake up this morning?

• What time do sixth graders wake up each morning during the school week?

Multiple Choice

How many books do each student in your class have?

• Statistical

• Non-statistical

Multiple Choice

Which is NOT a statistical question that could be asked about the data?

• What is the lowest score a 6th grader got?

• What is the highest score a 6th grader got?

• What is the average score a 6th grader got on the Science Test?

• Who took the test?

Multiple Choice

Interview every 10th student who enters the school in the morning.

• simple random

• voluntary response

• systematic

• convenience

Multiple Choice

A ___ is a small portion of the population used to gather data from.

• Systematic Sampling Method

• Sample

• Population

• Bias

Multiple Choice

Units of the population are grouped; one or more groups are selected at random.  All units of that group are included in the sample.

• cluster sample

• simple random

• stratified

• proportional

Multiple Choice

Identify the type of sample.   

A computer science teacher wants to know how students at a school most often access the Internet.  The teacher asks students in one of the computer science classes.

• Systemic Sample

• Self-Selected Sample

• Stratified Sample

• Cluster Sample

• Convenience Sample

Multiple Choice

The plant has grown 4 cm since yesterday.

• Qualitative

• Quantitative

• Both

• Neither

Multiple Choice

Dolphin colors range from gray to white.

• qualitative

• quantitative