Mean, Median, Mode
Find the Mean of: 83, 47, 11, 4, 25,70, 55, 30,20, 8
Answer : 35.3
A scientist collected two sample sets of snowfall data. Which statistic should they use to compare the spread of the two sets of data?
Answer: Standard Deviation
What are all the points to a boxplot?
Answer: Min, Median, Max, Q1 (lower quartile), Q2 (upper quartile), and Whiskers.
Whats the formula of finding the percentile?
Answer:
Percentile=Number of Values (x) divided by total number of values and times by 100
What are the three measures of center in Statistics?
Answer: Mean, Median, Mode
A set of data has a mean of 12 and a standard deviation of 3. The data point of the set has a z-score of 1.3. What does a z-score of 1.3 mean?
Answer: The data point is 1.3 standard deviation away from 12.
Create a box plot with the numbers given below.
Min 72, Max 88, Median 89, Q1 75, Q2 85
Show teacher for confirmation.
Find the percentile ranking of 10 in the data below.
1, 1, 2, 3, 3, 3, 4, 5, 5, 6, 6, 7, 8, 8, 8, 9, 10, 11, 12, 12
Answer: 85%
Randy scored 98, 80, 92, 79, 84, 88, and 80 for one semester. Find the mean, median, and mode of his test scores.
Answer:
Mean = 86.83
Median = 84
Mode = 80
A set of data has a mean of 0.5 and a standard deviation of 0.01. A data point of the set has a z-score of 2.5. What does a z-score of 2.5 mean?
Answer: The data point is 2.5 standard deviations away from 0.5.
Height of boys and girls
Girls: Min=64, Max=70, Median=67, Q1=66, Q2=69
Boys: Min=61, Max=73, Median=66, Q1=65, Q2=70
Who has the highest height according to the data above?
Answer: Boys
55, 47, 41, 42, 48, 34, 26, 29, 28, 48, 22, 43, 52, 84
Find the percentile of 43
Answer: 85.7%
Find the Mean, Median, and Mode of the numbers listed below:
77, 74, 80, 45, 45, 25
Answer: Mean 57.7, Median 59.5, Mode 45
Find the Standard Deviation of the numbers below: 25,29,24,26,30,35,37,40
Answer: 5.9
Collect data from your group on the amount of hours each student spends on their phone. Create a box plot with that information using the five number summary.
Answer:
31, 31, ,32 ,33, 33, 33, 34, 35, 35, 36, 38, 39, 39, 39
How many values are below 34 and what is the percentile rank of 34.
Answer: 6 and 50%
Test Scores: 93, 76, 82, 90, 41, 53, 41, 88, 94
Measure the the change if two new test scores were added to the set: 90 and 83?
Hint: Measure before and after the change
Before Change: Mean 73.1, Median 82, Mode 41
After Change: Mean 75.5, Median 83, Mode 41 and 90
The test scores of the AP class are given below:
90, 75, 72, 88, 85
The teacher wants to find the variance for the class population. What is the value of the numerator of the calculation of the variance?
Answer: 258
Store A: Min=200, Max=600, Median=500, Q1=400, Q2=550
Store B: Min=250, Max=550, Median=400, Q1=350, Q2=450
Which store has more customers?
Answer:
Finsh the problem below.
90 (20 +1) / 100
Answer:
1890/100
18x9 ~ 19
=94