Statistical or Not
Using the data below, find the average amount of tip money Sally made over the last 9 days.
$10, $12, $15, $9.25, $10.75, $10, $17, $14, $9
What is the mode?
Sally made an average of $11.89 per day.
The mode is $10
what is the range 5, 10, 17, 19, 35, 3, 4, 21, 7, 2
35 - 2 = 33
What fraction or percentage of data is in each of the 4 sections of a box and whisker plot.
25%
Find the lower extreme 5, 10, 15, 20, 25
5
Should a statistical question have a single answer?
Multiple Answers. Includes typical data
What is the median? 93, 47, 37, 49, 25, 12, 13, 57
(37 + 47)/2 = 42
what is the median 3, 3, 4, 5, 6, 10, 15, 17, 18, 19, 21 29
(10 + 15)/2 = 25/2 = 12.5
If a display "graph" is skewed to the left, or is non-symmetrical, what would be the best measure of center to use, mean or median?
median
What is the upper extreme 5, 10, 15, 20, 25
25
Is this a statistic question? What is the favorite ice cream flavor of the students in Mrs. Keely's class?
Yes
What is the median? 103,100, 125, 120, 110, 140
115
what is the upper quartile? 29 34 39 43 73 91 198
91
When looking at data, when would you use the mean to measure the center of the data?
If the data has symmetry or is symmetrical, you would use the mean. The mean and median are the same when the data is symmetrical.
What is the first quartile? 1, 2, 3, 4, 4, 5, 6
2
Is this a statistical question? Does the Watson Family watch TV?
no
The amount of water in cups of 10 canteens are shown by this data. If the cups of water are shared equally between the 10 canteens, how any cups of water will be in each canteen? (**shared equally means to find the average or mean)
1, 1, 2, 3, 4, 4, 5, 6, 7, 8
41/10 = 4.1 cups of water will be in each canteen
What is the upper quartile? 35, 49, 53, 69, 69, 77, 84
77
What is the first step you need to do to make a box plot?
order the data from least to greatest
Sally made the following amount of money in tips over the past 9 days.
$10, $12, $15, $9.25, $10.75, $10, $17, $14, $9
Find the 5 number summary and draw a box plot on your jeopardy template.
Upper Extreme: $17, Lower Extreme: $9, Median:$10.75, Upper Quartile: $14.50, Lower Quartile: $9.63 (rounded to the nearest penny)
Is this statstical? What is the average score on Mrs. Keely's unit 1 statistics assessment?
yes
Kimberly has the following grades in math class, 85, 98, 94, 89, 100. What score will she need to make on the next exam to have an average of 92?
Kimberly will need to score 86 on her next exam.
Find the IQR of the data set. 30, 45, 46, 72, 78, 89, 99, 100, 100
Median = 78, Q1 = 45.5, Q2 = 99.5
IQR = 99.5-45.5 = 54
What are the measures of center that you can find or calculate by looking at a dot-plot?
Mean, Median, Mode, MAD
What is the IQR of the data-set 98, 79, 95, 92, 89, 100