Day Statistics intro

What makes a Statistical Question?

• Statistical questions are questions that can have more than on answer.

• What is 2+2? Who is the leading scorer in MLB? What are the measurements of Northside MS,? None of these are statistical questions.

Multiple Choice

Which question is statistical?

• How many visitors came to the museum each month last year?

• What is the address of the museum?

• What time does the museum open tomorrow?

Multiple Choice

Which question is statistical?

• Where did you celebrate your last birthday?

• What is the average age of my friends?

• What are the ages of my friends' grandparents?

Line Plots

• Displays the frequency of each data value in a data set.

• Sometimes called a dot plot

• The total number of xs or dots equals the total number of datat values in the set of data.

Multiple Choice

The line plot show the distances, in miles cyclists completed on Saturday. How many cyclists went at least 11 miles?

• 10

• 1

• 3

Multiple Choice

What is the maximum amount of goals scored?

• 3

• 1

• 0

• 7

Multiple Choice

Histograms

• A histogram is a graphical display of data using bars of different heights.

• In a histogram, each bar groups numbers into ranges (or bins)

Multiple Choice

How many people at the bowling alley were ages 6 to 25

• 12

• 5

• 7

• 16

Fill in the Blanks

How many people were at the bowling alley?

Multiple Choice

How many times did she practice for less than 30 minutes?

• 13

• 9

• 12

• 17

Multiple Choice

Describe the distribution of the data.

• Skewed left or negative skew

• Skewed right or positive skew

• Skew normal or normal distribution

• No skew

Multiple Choice

Describe the distribution of the data.

• Skewed left or negative skew

• Skewed right or positive skew

• Skew normal or normal distribution

• No skew

Multiple Choice

How would you describe this distribution?

• Left skewed

• Uniform

• Right Skewed

• Symmetrical

Multiple Choice

Describe the histogram:

• Left Skewed

• Normal/Symmetrical

• Right Skewed

• Uniform/Flat

Multiple Choice

How many students have more than 1,000 songs on their MP3 player?

• 5
• 16
• 10
• 4

Multiple Choice

Which interval has 400 employees?

• 33-43

• 0-10

• 77-87

• 66-76

​Talley/Frequency Charts

• An organized way to collect your data.

• Shows how often one data point appears in a data set.

• Frequency charts change tally charts into a numerical format.

Multiple Choice

What is the frequency for the number of weeks that had only 4 days of rain?

• 4

• 6

• 19

• 15