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M,M, and M
Box Plots
Standard Deviation
Samples and Populations
Potpourri
100

The number that shows up the most. 

Mode

100

This 5 number summary is needed to make a box plot. 

Quartile 1, quartile 2, quartile 3, min, and max. 

100
What is standard deviation?
The distance of a set of data points from the mean
100

Classify the type of sample:

The students who attended a prom committee meeting were each given a raffle ticket for a drawing of five prizes. 

Simple random
100

Name the mode:

3, 5, -2, 2, 10, 8, 2, 11

2

200

The average of the data. 

The Mean

200

The quartile 2 for this set of data;

33, 45, 47, 51, 55

47

200
What is the mean and standard deviation of the following set of scores: 8, 8, 8, 8, 8, 8
mean = 8 s = 0
200

Name the sample, population, statistic, and population.

A random sample of 1003 Mercy County voters is asked if they would vote for the incumbent for governor The percent responding yes is calculated.

Sample: 1003 Mercy County voters

Population: All Mercy County voters

Statistic: 1003 Mercy County voters that said yes.

Parameter: All Mercy County voters that said yes.

200

Determine the type of study. 

A gym owner want to test whether changing the color of the walls improves member satisfaction. 

Experiment.

300

The middle value of the data.

Median

300

Explain how to calculate if there is an outlier.

Subtract the (1.5)IQR from the Q1 and add (1.5)IQR to the Q3.

300
Set A: 3, 4, 5, 6, 2, 3, 4 Set B: 3, 6, 8, 9, 1, 9, 1 Which data set would have the smaller standard deviation? How can you tell? (no calculations needed)
Set A because the numbers are closer together
300

A stratified random sample of high school students from each school in the county was polled about the time spent each week on extracurricular activities. 

Sample: stratified sample of  high school students in the county

Population:All high school students across the county

Statistic: time spent each week on extracurricular by sample

Parameter: time spent each week on extracurricular by high school student in the county. 

300

Find the mean absolute deviation of 4, 8, 2, 15.

4.25

400

Find the mean from this data; 5, 12, 8, 22, 30,2.

Round your answer to the nearest tenth.

13.2

400

20, 24, 33, 55, 90, 222

Prove that 222 is an outlier.

90 + 1.5(66)= 189

400
What is the mean and standard deviation for the following set of numbers? 4, 8, 6, 10, 16, 14, 12, 18
Mean = 11 Standard Deviation = 4.58
400
Give an example of a stratified sample. 
Population is divided and then randomly selected. 
400

Give an example of a sample, population, statistic, and parameter.

Various answers.

500

The median of the data is:

4, 7, 7, 9, 14, 14, 22, 28

11.5

500

A set of data has an outlier. Describe how your box plot would change and how the outlier is shown. 

The quartiles need to be recalculated and the outlier would be a dot not connected to the box. 

500
What is the mean and standard deviation for the following set of numbers? 23, 10, 11, 24, 32, 15, 13, 16
mean =18 s = 7.14
500

Describe the situation; 

A television network wants to conduct a cartoon marathon. To choose the episodes, they mail a questionnaire to people selected at random throughout the country. 

Survey