Questions tagged [percentage]

Number or ratio expressed as a portion of 100

Filter by
Sorted by
Tagged with
1
vote
1answer
63 views

measure for jobs/complaints ratio

I have a number of jobs in a database which can receive complaints. A job can receive several complaints and a job has an associated supplier. I would like to identify the worst performing suppliers. ...
1
vote
1answer
668 views

Statistic test on percentage correct classified by emotion recognition

For a potential emotion recognition bachelor-project I was wondering what statistical test I have to perform when I get my results to test whether it's significant. I will be testing which combination ...
1
vote
0answers
33 views

How do I convert a survey scale [7-point, -3 to 3] to a 7-point scale [1-7]?

I am working with a survey scale that is from -3 to 3. I have a mean value of .94 and I want to identify if there are ceiling effects, but I need to change the entire scale to 1-7 in order to ...
1
vote
0answers
47 views

Modelling percentage and proportion data with GLM's [duplicate]

I would like a simple answer, if there is one, to a question I cannot seem to find on here. What is the best way to model percentages? Say I have a glass that is empty and I fill it with liquid ...
1
vote
0answers
14 views

Comparing percentiles of datasets of varying sizes

I am trying to build a simple anomaly detection solution. I have a dataset with normal observations. It has about a 100 values. I calculate the ...
1
vote
0answers
20 views

Need help finding correlation between output and tax rate? - Best method to do so

I am currently doing a study on the impact of a change in agriculture taxes on agriculture output. I want to compare output (volume in $) data for years 2013-2014-2015-2016-2017 in different crop ...
1
vote
0answers
33 views

Analyzing data expressed as a percentage allowing for phylogenetic signal

I am analyzing a dataset which consists of measurements for several different metabolites over a number of species. In each cell, the data are expressed as the percentage of the metabolite j in the ...
1
vote
1answer
69 views

Percentile calculation for binary voting system

Consider a system like Tinder for example where users can vote yes or no to a profile (like or dislike). If Tinder wanted to come up with an internal percentile rating of a user based only on the ...
1
vote
0answers
14 views

z test for sum of two percentages as greater than 100

I have a data set in which participants made a choice between two options--option A and option B. Participants were assigned to either choose an option or reject an option (so, there are two ...
1
vote
0answers
99 views

Converting Cohen's d to a Relative Risk for a model-based economic evaluation

Hello researchers: my question is about the use of forest plot results for an economic model. In a forest plot you could have the following results: 0.34 [0.22, 0.45], which would be the pooled ...
1
vote
2answers
46 views

Distance measure for binary arrays

Basically if I have binary sequence that I want to check against, and I want to determine how far other binary sequences are to this first sequence, what is the most appropriate measure to use. The ...
1
vote
0answers
25 views

Regression question from Freedman Statistics

From Freedmans statistics, page 165, Regression, Exercise Set D. Question : Answer : "Well under 50% - the regression effect" I'm not sure about the reasoning for this though, I'm not sure I ...
1
vote
0answers
72 views

How to compare the marginal variation of two groups with a big difference frequency between them?

I have two different groups (A) and (B) and I would like to compare the marginal variation of the frequency for each time of both groups but, each one of them has a different frequency for a given ...
1
vote
0answers
86 views

Interpretation of dependent variable when one independent variable is a percentage

I have the following regression: $Revenue = B_0 + B_1*ForecastError + B_2*OilPrice$ Revenue is in dollars, Forecast error is in percentage but written out as decimals (Example the data is written ...
1
vote
0answers
93 views

Analysis strategy for left skewed percentage response variable

I have a dataset that is made up of percentage values of DNA methylation at a number of loci and we are looking to model the relationship with a) a treatment and b) a genomic annotation. The histogram ...
1
vote
1answer
90 views

How can I calculate SD when displaying data as a percentage?

Hypothetically, I am trying to make a graph representing the abundance of 4 species in a quadrat. I want to display this as a % of the total number each species represents. Here is an example dataset: ...
1
vote
1answer
74 views

Which statistical test to use (percentages of codon usage)?

I would like to compare each codon usage percentages between analyzed organisms (which will result in 6 separate statistical tests, subject to 6 codons). Which statistical test should I use? ...
1
vote
0answers
71 views

Test for difference between groups: percentage variable

I have 1249 census tracts in Colorado. I've grouped them into three groups, based on whether or not they are in "hot spots, "cold spots", or "neither" for their smoking prevalence (%). I'm trying to ...
1
vote
0answers
1k views

Combining percentage from different categories

I have to combine two percentages from different categories, which are questions answered / total questions: 2/10 * 100 = 20% 3/6 * 100 = 50% I combined both percentages ((20+50)/2)*100 = 35% ...
1
vote
0answers
37 views

In multiple regression, how to interpret multiple percentage covariates?

I have the continuous variable Y and the predictors Pct_less10, Pct_10to20, and Pct_21plus. NOTE: The predictors are basically percentage of people under age category and they add up to 1. So my ...
1
vote
1answer
31 views

Is there a more appropriate way to interpret/look at this Maternal Mortality Rate data?

My fiancee and I are discussing maternal mortality rates in the US. According to the data, from a May 2017 NPR article, 26.4 out of every 100,000 women die during child birth in the US. My fiancee ...
1
vote
0answers
23 views

Compare percentages of letters between words of different sentences (i.e finding significant changes between multiple distributions of percentages)

To explain in an abstract way what I am trying to investigate, please imagine that you are interested in seeing if certain letters are enriched in the words of a sentence compared to the words another ...
1
vote
1answer
47 views

Is there a multiple regression model with both percentage and unit changes in $Y$?

In a standard linear model, $Y = \beta_0 + \beta_1 X_1 + \beta_2 X_2$, a unit increase in $X_1$ leads to a $\beta_1$ increase in $Y$ (likewise for $X_2$). In a log-level model, $\ln(Y) = \beta_0 + \...
1
vote
0answers
590 views

SPSS Chi-Square using only percentages

Here's the data that I have (percentages only) Gender: M = 60% F = 40% Expected: M = 50% F = 50% How do I use SPSS to run $\chi^2$ test since I only have the percentages?
1
vote
1answer
96 views

On standardisation and the use of percentages in linear regression

After browsing in CV for some answers, I haven't really found what I am looking for. I am planning to run a regression (on Stata) between the client satisfaction (Y) and the provider satisfaction (...
1
vote
1answer
205 views

transformation of response variable which is in percentage

Here's my data. https://www.dropbox.com/s/puf57efqkdl8zt0/data.csv?dl=0 It's too big, therefore I did not know to use the dput(data) command. I am using a ...
1
vote
0answers
30 views

Method to predict outcome as percentage of two categories? [duplicate]

In real world example I have elemental composition data for groundwater, which is known to be coming from two sources. I have control data where all predictors are from source A and data where all ...
1
vote
0answers
61 views

Comparing percentages of 10 different groups without access to the raw data

I have access to the percentages of referring to "X" for 10 different ethnic groups. Let's say, A1 to A10 as shown below A1: 9.22 A2: 11.40 A3: 12.68 A4: 17.89 A5: 19.53 A6: 19.84 A7: 29.34 A8: 30.77 ...
1
vote
1answer
51 views

Sum of all covariables value per patient is 1

I have a database with only 27 patients, and each patient was analyzed for the more than 119 different bacterial species. We test the percentage of each bacterial species among all the 119 species for ...
1
vote
0answers
88 views

How many times more likely are the members of Group A to be diagnosed with virus X compared to the members of Group B?

Suppose Group A makes up an estimated 2% of the population and Group B makes up an estimated 98% of the population (Group B consists of everyone who is not in Group A). However, Group A accounted for ...
1
vote
0answers
489 views

Regression with percentage-point change as dependent variable

I want to look at the correlation between a change in prevalence of a particular outcome (expressed in percentage points) and a continuous predictor variable which is an index. So for the response ...
1
vote
0answers
135 views

Aggregation system for percentage Key Performance Indicators (KPIs)

I need some suggestions for an issue regarding our business intelligence (BI) system, percentage Key Performance Indicators (KPIs) and average values. I am using a BI system for our organization, ...
1
vote
0answers
101 views

Should I treat my data as ordinal or interval?

I conducted a survey where I asked respondents how much they reduced their financial overhead, based on the following options: 0% (coded as 0 in my dataset) 1-10% (coded as 1) 11-25% (coded as 2, etc....
1
vote
0answers
720 views

how do I compare percentages and show they are significantly different?

Here is my data: I have two groups (experimental group and control group)voting for 6 different actions, listed as A, B, C, D, E, F. The sample size of the 2 groups are different. Therefore, I am ...
1
vote
1answer
97 views

Inferential statistics for vector of percentages

I'm getting confused by this and was wondering if someone can enlighten me: I have a random sample consisting of 50 percentages. Each percentage can take on any value between 0% and 100% inclusive ...
1
vote
3answers
196 views

Using a t-test for paired proportions

This is something that I'm having trouble verifying on Google, so I'm asking here as a sanity check. I have data collected randomly (not equally) over time for different users. To determine if some ...
1
vote
0answers
64 views

“Controlling” for population/sample sizes when looking at rates?

I have a pretty basic understanding of statistics, so please bear with me: I'm making an index (ranking) of sector performance I am including indicators such as "Percent of profitable firms in sector"...
1
vote
0answers
135 views

Can you calculate descriptive statistics (SD, SE particularly) from percentages and ratios?

I'm a cell biologist and a lot of my data is expressed as a fraction (percentage) of the total number of cells in a single experiment in a number of separate categories (generally 5 or so). The number ...
1
vote
0answers
1k views

Regression with percentage change?

As the education rating of a Canadian city decreases by $1\%$, the crime rating will change by ___ (make sure you include the negative sign if warranted) The line of the equation I found to be $\hat{...
1
vote
0answers
517 views

Should descriptive statistics on percentages data be weighted?

I'm trying to put together descriptive statistics for a set of differently sized groups of students. For each group of students, let's say I know the # of students who are left handed. I'd like to ...
1
vote
0answers
53 views

how to compare groups and percentages within

I am new to statistics and would really appreciate help. The people within the groups are different - how do I compare the percentages to see if there is a statistical significance between the groups ...
1
vote
0answers
186 views

How to model overdispersed percentage data?

this is my first post so let me know if you need more information. This is a pretty general question for now, but I am not sure how to approach this. The data I have is from an ecological study. In ...
1
vote
0answers
742 views

ANOVA on percentages

Please read edit 3 first I am trying to find out the significant factors in a dataset of percentages, a sample of which are below. The difficulty is that the data violates the assumptions of ANOVA, ...
1
vote
0answers
458 views

Comparing Percentages Between 2 Groups When Each Group's Total Percentage Exceeds 100

I am comparing the rate of specific Response Patterns A through L among students in Group 1 vs. Group 2 (rates for the first five patterns are exemplified in the table). These are response patterns ...
1
vote
1answer
164 views

Statistical significance of differences between percentages

I have a problem annoying me. I have associative word lists which were formed by 150 participant's answers to a given word. At the same time, I gathered information about each word's valance with a 5 ...
0
votes
3answers
65 views

Wording for comparing two percentages

I am trying to figure out how to make a correct statement with two values: X = 59.8% Y = 26.7% Is this correct? ...
0
votes
1answer
32 views

Relationship between coefficient of dispersion and percent of data points above the median?

If I know the coefficient of dispersion and the median of a data set, is it possible for me to then calculate the percent of data points that are above the median? For example, what if the median is ...
0
votes
1answer
305 views

Can I use a binomial model with logit link function when dealing with continuous proportions?

I have continuous proportion data (i.e. ranges from 0 to 1). Or it could be percentage too if multiplied by 100. This is the proportion/percentage of overlap in home range between animals, therefore I ...
0
votes
1answer
52 views

Is it reasonable to display “percentage data” in a boxplot, why?

I have data that are in fact percentages of C (bound to clay) combusted in a certain temperature interval. Exemplary data: ...
0
votes
1answer
48 views

How to conduct significance testing for percent outcome based on summary statistics only?

I have three groups A, B, and C, with corresponding sample size. I have gender variable as a binary variable, with M vs. F. For each group, it's summarized into "percentage woman". I only have the ...