Review Unit 4A What is the mean of the following numbers? {10, 15, 14, 8, 10, 11, 12, 13, 15, 10} Answer: Mean= 11.8 10+15+14+8+10+11+12+13+15+10= 118,
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Slide 1
Slide 2
Review Unit 4A What is the mean of the following numbers? {10,
15, 14, 8, 10, 11, 12, 13, 15, 10} Answer: Mean= 11.8
10+15+14+8+10+11+12+13+15+10= 118, 118/10=11.8
Slide 3
Review Unit 4A Find the median of the following numbers.
{25,22, 24, 26, 24, 30, 31, 33, 40, 26} Answer: Median= 26 Numbers
in order: 22, 24, 24, 25, 26, 26, 30, 31, 33, 40
Slide 4
Review Unit 4A Find the mode of the following set of numbers.
{101, 105, 102, 102, 110, 110, 115, 102, 105, 100} Answer: Mode=
102 Numbers in order: 100, 101, 102, 102, 102, 105, 105, 110, 110,
115
Slide 5
Review Unit 4A Find the Mean Absolute Deviation(MAD) of the
following numbers. {22, 20, 21, 22, 22, 20, 21, 25, 24, 23} Answer:
MAD=1.2 Mean= 22+20+21+22+22+20+21+25+24+23=220, 220/10=22 22-22=0,
20-22=-2, 21-22=-1, 22-22=0, 22-22=0, 20-22=-2, 21-22=-1, 25-22=3,
24-22=2, 23-22=1 0+2+1+0+0+2+1+3+2+1=12, 12/10=1.2
Slide 6
Review Unit 4A Find Q1 and Q3 for the following numbers. {75,
76, 78, 80, 82, 74, 83, 74, 75, 72} Answer: Q1=74 Q3=80 Numbers in
order: 72, 74, 74, 75, 75, 76, 78, 80, 82, 83
Slide 7
Review Unit 4A What is the min of the following set of numbers?
{55, 56, 70, 58, 52, 53,59, 53, 54, 53} Answer: min =52 Numbers in
order: 52, 53, 53, 53, 54, 55, 56, 58, 59, 70
Slide 8
Review Unit 4A What is the max of the following set of numbers?
{76, 67, 64, 72, 79, 80, 63, 65, 70, 72} Answer: max=80 Numbers in
order: 63, 64, 65, 67, 70, 72, 72, 76, 79, 80
Slide 9
Review Unit 4A What numbers are included in the Five Number
Summary? Answer: min, Q1, median, Q3, max
Slide 10
Review Unit 4A What is the IQR for the following set of
numbers? {117, 119, 125, 130, 111, 126, 122, 115, 120, 129} Answer:
9 Numbers in order: 111, 115, 117, 119, 120, 122, 125, 126, 129,
130 Q1= 117, Q3=126 IQR= Q3-Q1 IQR= 126-117= 9
Slide 11
Review Unit 4A What type of distribution is shown? Answer:
Symmetric Distribution
Slide 12
Review Unit 4A What type of distribution is shown? Answer:
Left-Skew Distribution
Slide 13
Review Unit 4A What type of distribution is shown? Answer:
Right-Skew Distribution
Slide 14
Review Unit 4A What type of distribution is shown? Answer:
Non-Symmetric Bimodal Distribution
Slide 15
Review Unit 4A Which graph has a higher measure of center?
Answer: The bottom graph, median=68
Slide 16
Review Unit 4A Which graph has a higher measure of center?
Graph A Graph B Answer: Graph A
Slide 17
Review Unit 4A What is the range of the following data? {105,
108, 100, 111, 99, 98, 104, 102, 100, 110} Answer: 13 Numbers in
order: 98, 99, 100, 100, 102, 104, 105, 108, 110, 111 Range=
max-min Range- 111-98= 13
Slide 18
Review Unit 4A Given the following grades on a Math test,
complete the frequency chart below. {60, 60, 70, 73, 80, 85, 89,
90, 89, 91, 65, 68, 73, 85, 89, 90, 100, 96, 99, 98}
IntervalFrequency 60-69 70-79 80-89 90-99 100 + Frequency 4 3 6 6
1
Slide 22
Review Unit 4A Which dot plot has the least spread? Graph
AAnswer: Graph A Graph B
Slide 23
Review Unit 4A Which box plot has the greater spread? Graph A
Graph B Answer: Graph A
Slide 24
Review Unit 4A If the data has outliers, what is the best value
to use for the measure of center? Answer: Median
Slide 25
Review Unit 4A Using the following dot plot, make a list of all
of the sales. Answer: $10, $12, $12, $14, $14, $14, $16, $16, $16,
$18, $18, $18, $18, $20, $22, $22, $22, $22
Slide 26
Review Unit 4A What values are used to measure the spread of
data? Answer: Range & IQR
Slide 27
Review Unit 4A What values are used to measure the center of
data? Answer: Mean & Median
Slide 28
Review Unit 4A Compare the following data sets using spread and
measure of center. Data Set A: {20, 22, 24, 27, 28} Data Set B:
{35, 40, 42, 34, 34} Answer: -Data Set B has a higher measure of
center because its median is higher than data set A. Median of Data
Set A= 24, Median of Data Set B= 35 -Data Set B has a greater
spread because its IQR is 7 versus the IQR of data set A which is
6.5
Slide 29
Review Unit 4A Using the following frequency chart determine
which interval the median would be located in. Answer: Between
21-30 IntervalFrequency 0-1012 11-2010 21-308 31-406 41-5014
Slide 30
Review Unit 4A Which of the following has the lowest mean
absolute deviation (MAD)? A. 3, 4, 5, 6 B. 10, 12, 14, 16 C. 6, 7,
8, 9 D. 5, 5, 5, 5 Answer: D
Slide 31
Review Unit 4A According to the following chart, how many
people participated in the survey? Answer: 78 people AgeFrequency
20-2915 30-3912 40-4925 50-5918 60-698
Slide 32
Review Unit 4A What label always goes on the y-axis when
creating a histogram? Answer: Frequency
Slide 33
Review Unit 4A According to the following frequency chart, how
many students scored between 70-79 on their test? Answer: 6
students ScoresFrequency 60-695 70-796 80-8910 90-9912 100 +2