Who's that graph
What percent of chickens laid between 2 and 6 eggs on Image A?
50%
What is mean? (give the definition or equation)
Average of a data set - sum/# of values
Which of the following is an Observational Study?
A company divides volunteers into two groups to test the effectiveness of a new energy drink.
A company records the number of employees that wear jeans in a week.
A company records the number of employees that wear jeans in a week.
What is Mr. Hayes favorite sport? (which he also coaches)
Soccer
What percent of chickens laid between 3 and 8 eggs on Image A?
50%
What measure of center is used when there is an outlier, because it is unaffected?
Median
Family Feud asks groups of 100 people a list of questions as data for their show. What kind of study is this?
Sample Survey
How many siblings does Mr. Hayes have?
2, a brother and sister
How many swimmers are 8-12 years old?
14 swimmers
What measure of spread is used when there is an outlier, because it is unaffected?
Interquartile Range (IQR)
What is bias? Give either a definition or an example of a biased question/sample
Tendency for a method to produce results that differ from the truth. Opinion, favoritism.
What year was Mr. Hayes born?
2002
What is the mode of the Stem and Leaf plot in Image C? (The stem is tens and the leaves are ones ex: stem 1/ leaf 7 = 17)
32
What does a high standard deviation mean/look like? (will accept drawings)
High distance from the mean/Data that is spread out far from the middle
Statistics class wants to know the proportion of students at LCHS that plan to go on vacation. They take a random sample of 50 students and find that 45% of students in the sample are planning to go on vacation. What can be concluded about the population?
About 45% of LCHS students are planning to go on vacation.
What is Mr. Hayes dog's name?
Trippie (Michael Lamar White III) also accept Rocky
What five values are used to create a boxplot?
Minimum, 1st Quartile, Median, 3rd Quartile, Maximum
Find the IQR of the set (7, 14, 23, 9, 28, 4, 19, 11, 26, 5, 30)
IQR = 19
Statistics class wants to know the proportion of students at LCHS that plan to go on vacation. They take a random sample of 50 students and find that 45% of students in the sample are planning to go on vacation. They assume their margin of error to be 10%. What range of LCHS students are planning to go on vacation based of the study?
35%-55% of Students
What is Mr. Hayes favorite soccer team and player?
Liverpool and Virgil van Dijk