WorksheetsUnit 1B Review
Total questions: 45
Worksheet time: 4hrs 45mins
The median of a data set is the (a) number when the data is arranged in order from least to greatest.
The range of a data set is the (a) minus the Min.
The mode of a data set is the value that appears the (a)
The standard deviation of a data set is how (a) the numbers are.
The smallest number in a data set is the (a) .
The interquartile range is also know as the (a) .
IQR is found by taking Q3 – (a) .
The mean of a data set is also called the the (a) .
The largest number in a data set is the (a) .
Check all the measures of center
Median
Range
Mean
Mode
IQR
Check all the measures of spread.
Range
Mean
Standard Deviation
IQR
5 Number Summary
13, 15, 15, 15 ,18, 21, 22, 29, 40, 41, 45, 47
Calculate the mean.
26
26.25
26.5
26.75
13,15,15,15,18,21,22,29,40,41,45,47
Calculate the median.
21
22
21.5
22.5
13, 15, 15, 15 ,18, 21, 22, 29, 40, 41, 45, 47
Calculate the mode.
15
There is no mode.
47
21.5
13, 15, 15, 15 ,18, 21, 22, 29, 40, 41, 45, 47
Calculate the IQR.
25.5
21.5
15
47
13, 15, 15, 15 ,18, 21, 22, 29, 40, 41, 45, 47
Calculate the range.
25
34
15
47
In this dot plot, if Q1 = 13, and the IQR =3, what is Q3?
3
13
14
16
Which box plot has the smallest IQR?
Sample 1
Sample 2
Sample 3
All the same IQR
Which box plot has the highest median?
A (blue)
B (orange)
C (grey)
D (yellow)
Compare the median and IQR of the following box plot.
median > IQR
IQR > median
median = IQR
What percent of Mrs. Sanchez's students got between a 30-70 on the math quiz?
25%
50%
75%
100%
If we removed the dots at 13 and 14, would the standard deviation decrease, increase, or stay the same?
decrease
increase
stay the same
Which histogram has the largest standard deviation?
A
B
C
D
The UCONN womens basketball team has scored 82, 89, 70, and 72 in their last 4 games. If they want an average points per game of 80, what do they need to score in their last game?
313
102
87
85
Data set with five values: 15, 6, 9, 11, and x. The average of the five values in the data set is 13. What is x?
12
24
13
23
Dan wants to end the year with an 85 average in History. So far he has earned a 79, 81, and 87. What does he need to earn in Q4 to end the year with an 85 average?
100
97
95
93
A data set: 4, 2, 1, 7, x, and y has an average of 5. What is the value of x + y?
14
30
16
Not possible
A data set of 7 numbers: 12, 11, 9, x, 13, 20, and 21 have an average of 15. What is the MEDIAN?
19
13
20
21
A data set: 15, 6, 12, 11, 24. What is the range?
18
9
13
24
The table below summarizes the ages of employees at a (large) local coffee shop. Calculate the mean age of the employees.
14.4
23
24
138
The table below summarizes the ages of employees at a (large) local coffee shop. Calculate the median age of the employees.
22
23
24
26
The table below summarizes the ages of employees at a (large) local coffee shop. Calculate the mode for ages of the employees.
11
22
24
26
The table below summarizes the ages of employees at a (large) local coffee shop. Calculate the range of ages of the employees.
6
9
24
11
What is the mode number of hours spent studying?
8
2
3
4
The dotplot below summarizes how long each of 15 employees worked for yesterday’s shift. Calculate the median # of hours worked yesterday.
5
7.5
8
9
The dotplot below summarizes how long each of 15 employees worked for yesterday’s shift. Calculate the range for the # of hours worked yesterday.
0 to 10
5
8
10
The dotplot below summarizes how long each of 15 employees worked for yesterday’s shift. Calculate the mode for the # of hours worked yesterday.
1
6
8
9
The dotplot below summarizes how long each of 15 employees worked for yesterday’s shift. What percent of the employees worked for more than 8 hours yesterday?
40%
10%
6%
67%
The dotplot below summarizes how long each of 15 employees worked for yesterday’s shift. Calculate the mean # of hours worked yesterday.
5
7.5
8
9
Data Set: 1, 12,12, 13, 13, 14, 14, 14, 14, 15, 16, 16, 17, 17
What is the IQR?
3
13
16
17
Data Set: 1, 12,12, 13, 13, 14, 14, 14, 14, 15, 16, 16, 17, 17
What is the range?
1
17
16
13
Calculate! What is the standard deviation? *Need desmos here
Data set: 16, 21, 22, 22, 25, 28, 31, 35
6.51
6.09
7.25
7.39
Calculate! Which number is NOT in the 5 number summary for the following data set: 101, 112, 135, 147, 180, 201, 222, 222, 222, 259
101
259
222
130
Calculate! Desmos or by hand...what is the IQR?
Data set: 16, 21, 22, 22, 25, 28, 31, 35
2
4
6
8
Weighted Average: Here are AJ's grades and according weights for Q1. What is his overall grade?
76
76.5
80
80.8
