Mean
What is the mean of the following numbers?
7, 53, 9, 39, 9, 36
mean = 25.5
Find the median of the following numbers:
62 64 69 70 70 71 72 73 74 75 77
median = 71
A set of data has 24 data points. How many data points will be in each quartile?
6
What are the three measures of center?
mean, median, mode
What is the equation of a line/proportional relationship?
y = kx
What is the mean of the following numbers?
1, 6, 87, 26, 8, 1
mean = 21.5
What is the mode of the following numbers?
62 64 69 70 70 71 72 73 74 75 75 75 77
mode = 75
How do you find the interquartile range?
Quartile 3 - Quartile 1
What defines a statistical question?
The question is statistical if it has many possible answers and generates data.
Maria read 80 pages in 2 hours. What equation represents her reading rate?
y = 40x
What is the mean of the following numbers?
7, 85, 9, 1, 67, 8
mean = 29.5
What is the median of the following set of numbers?
8, 3, 52, 48, 7, 78
Median = 28
(48 + 8)/2 = 28
Find the first quartile in the following set:
37 42 48 51 52 53 54 54 55
45
List what makes up the five number summary of a box plot.
Minimum, maximum, Q1, median, Q3
62 out of 250 people at a school wore blue shirts today. What percent, to the nearest tenth, wore blue?
24.8 %
What is the mean of the following numbers?
62 64 69 70 70 71 72 73 74 75 77
mean = 70.64
What is the mode of the following numbers?
15 19 18 10 11 12 20 21
No mode
What is the third quartile of the following set?
12, 14, 16, 16, 19, 20, 23, 25, 31
24
How do box plots look if they have an outlier?
One or both of the whiskers will look very long compared to the median.
Sonia invested $400 in her account with a 2 % interest rate. How much total money will she have in the account after 5 years?
Answer: $440
I = PRT
I = 400 x 0.02 x 5
400+40 = 440
Sam wants a 92 average for his test grades. So far, he scored a 90, 95, 89, and 95. What score does he need on his last test to achieve a 92 average?
He must score a 91.
What is the median of the following numbers?
5.5, 8.4, 9.2, 9.9, 10.3, 10.9
median = 9.55
If we removed the minimum and maximum from this set, what would be the value of the third quartile?
12, 14, 16, 16, 19, 20, 23, 25, 31
23
Which of the following is not a measure of variation?
range, interquartile range, mode, MAD
mode
What is the percent increase from last year to this year if a school had 430 people last year and 450 people this year? Round to the nearest tenth of a percent.
4.6%