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Questions tagged [excel]

Excel is a commercial spreadsheet program created by Microsoft.

2
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1answer
23 views

adjusted R squared for multiple exact same input variables

I was trying to understand how adjusted $R^2$ in a simple linear regression behaves when there exists multicolinearity. And realized I could not replicate the adjusted $R^2$ provided by excel data ...
0
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0answers
7 views

Calculating/Analyzing Cross Elasticity of Multiple Items

Need some direction regarding this topic. Lets say we have 4 items in a category and we need to calculate the cross elasticity of price across these 4 items. We have the historical data of sales and ...
3
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3answers
45 views

How to test for statistical difference for discrete data

I'm designing an experiment to evaluate reagents used to develop fingerprints. There will be a variety of objects with different surfaces, 2 different reagents, 3 different fingerprint donors (prints ...
0
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0answers
24 views

Visualization of comparison between periods of times in excel

Is there any way to generate a graph that show comparison between time periods? I have start-time and end-time of two different series in date time type. The best solution, as I see it, is a graph ...
0
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1answer
19 views

EXCEL 2016 Adding Extra Columns to file when Saved as a .csv File [closed]

I have this .csv file that I created from an EXCEL 2016 spreadsheet. This file does not work when I try and upload it to an online web service I use because there are extra columns at the end of the ...
0
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0answers
95 views

Research question: Which stain is most effective for improving tissue contrast in CT scans of the larynx?

I'm doing research into which stain out of I2KI, PMA and PTA is most effective for improving tissue contrast in CT scans of the larynx. I have 9 specimens in I2KI (CT scanned after 0, and then either ...
0
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1answer
26 views

Two sample T test frequency table

I am struggling with a data analysis. I have made a survey and got the following answers in the first turn, I put them in a frequency table Don't agree at all: 8 Don't agree: 6 I don't know: 16 ...
0
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2answers
38 views

checking of correctness of excel program for F test

i would like to express my doubt about F test performed by Analysis toolpak , let us consider following link F Test in excel everything seems ok until calculation of one tail critical value, ...
1
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0answers
29 views

Correlation between Likert scale question and binary question?

I am writing a report and I need to find correlation between question: how much do you trust banks (from 1-I dont trust them at all and 5-i trust them completely) and question: are you a member of ...
0
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1answer
211 views

Cross sectional regression in excel [closed]

Hi Can someone please let me know whether cross sectional regression is possible in Excel? I'm trying to evaluate CAPM from MacBeth regression. I need to run the cross sectional regression, but ...
0
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2answers
18 views

How can I determine standard deviation in excel given the probability that values will fall within a defined range?

Assuming a normal distribution with a mean of zero, if I am told that 68.2% of the population values are within +/- 4.7, I can conclude that the standard deviation is also 4.7. But what if I am told ...
1
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0answers
18 views

Can I directly obtain standard deviation using an Excel formula knowing only median error rate, but no sample size? [closed]

I have access to statistical data with a median error rate of 4.7%. This means half of values fall within an error rate of 4.7%, and half fall outside this range. The sample size is not provided, but ...
0
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1answer
11 views

index and base year

I am creating a league table of a group of people with the aim to track their performance on 5 KPIs using indices. Base month value is set to 100. Out of 5 KPIs, an increase in 3 indices means good ...
0
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0answers
29 views

Transforming raw scores to scaled scores using a proprietary scale

I'm working with questionaire answers from the Child Behavior Checklist (CBCL) for my master's thesis. The 113 items on the questionaire are organized into several subscales for different areas of ...
0
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0answers
15 views

Testing forecast accuracy in Excel [duplicate]

I'm looking for some advice on how to determine how accurate a forecast is. Basically, what I have is 23 years of competitive results for a particular sport (10000+ matches). The matches are broken ...
1
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0answers
33 views

Interpretation of linear regression intercept

I am aware this is a very basic question. I just need clarification (for my sanity) For this regression: Is it true to say that: The regression outturn records the intercept as significant. (If ...
0
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1answer
40 views

Statistical analysis, repeated measures t test or anova? Trouble with input when running any test

I've tried using google sheets/excel, but I can't figure how to run a 2 factor without repetition ANOVA (if that's the appropriate test for this data set). I think it's the way I set the spreadsheet ...
0
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4answers
746 views

How to: Analysing 5-Point Likert Scale with ANOVA

I am very confused since I could not find an understandable answer for it: I must analyse my Likert Scale data with ANOVA to get the significance (using the ANOVA is the requirement...). I have to ...
0
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0answers
9 views

Spreadsheet segmentation

I work on an spreadsheet segmentation/ml-based-parsing project. Input spreadsheets vary in shape and formatting to some extend. Goal is to transform any given spreadsheet into normalized database ...
2
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2answers
49 views

How would you go about modelling a sport with a fixed maximum score line (e.g. volleyball or tennis?)

In short, I don't have a great maths background but have always mucked about with modelling sports and making predictions (as I enjoy it). I have always used the Hal Stern "The Probability of Winning ...
0
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1answer
158 views

How does Excel interpolate / imputate missing values in time-series when fitting a line to a plot?

I have a scatter plot in Excel (upper part of the screenshot) of time-series data. In-between the values that I plot (to the left), are some missings. I fit a (linear) line to those values and display ...
0
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0answers
13 views

Weighted Standard Deviation in Excel [duplicate]

I have a dataset in excel that looks like this: ...
1
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1answer
310 views

Different regression coefficients in R and Excel

Asking a separate question because whilst this has been answered for polynomial regression the solution doesn't work for me. I'm performing a simple linear regression. Both R and Excel give the same ...
0
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1answer
86 views

Monte Carlo simulation--Have I applied Bernoulli distribution properly? [closed]

I am trying to run a monte carlo simulation and I just wanted to make sure that I set it up properly. A salesman visits 100 different homes. Someone answers the door 80% of the time. Of that ...
1
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0answers
39 views

Find correlation between names and score

I'm new to data mining and hope you can help me with my task :) First some details about my (input data) I've got an excel table with the following structure: ...
2
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1answer
22 views

Assessing pre-post survey data with change scores?

I have about 50 pre & post-surveys for an intervention. I am limited to using excel and was told to only calculate the change scores. For example: ...
0
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0answers
973 views

Standard Deviation of Discrete Random Variables in Excel?

I am looking for the Standard Deviation of the Discrete Random variable. I understand how to calculate it by hand but when I use the excel STDDEV function, I am getting a different answer. Is there a ...
0
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1answer
107 views

read.csv() columns NULL [closed]

This is a very simple question I hope, but just can't seem to solve myself. I'm trying to read a .csv file of integers into R using read.csv(), however for analysis reasons I need to convert all the ...
0
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1answer
28 views

Terminology Question (ANOVA/t-test) - With and Without Replication?

Coming from a Psychology background, I have always been taught statistics terms as "within subjects" and "between subjects". Now using excel I see they are using the terms Anova - 2 Factor With ...
1
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1answer
50 views

Calculating regression weights from a covariance matrix [duplicate]

My starting point is a covariance matrix (Not raw data) and I want to calculate the regression weights. I may have as many as 6-8 independent variables and 1 dependent variable so looking for a ...
0
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0answers
96 views

For a histogram, is there any standard rule about how large the min and max bin should be (underflow bin and overflow bin)?

Working with several large datasets in excel, about N=900. I would like to divide the data into a number of categories corresponding to low, med, high etc. for this biological variable. Histograms ...
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0answers
23 views

How to represent local significant differences between curves

I want to compare some curves to a 'normality corridor', and I would like to show in what regions (x values) the difference is significant.Take the example below, where I want to compare the dashed ...
0
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1answer
49 views

ANOVA & Sums of Squares in Excel and R

In this simple dataset, I have bird populations from three watersheds. I am completing an ANOVA by hand and in R and comparing the outputs. ...
-1
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1answer
55 views

A proper function for nonlinear regression with 3 predictors

There are three independent variables in my experimental work, namely flow rate (0.5 ≤ Q ≤ 9 where ΔQ = 0.5), particle size (a = {6, 10, 15}), and a geometric parameter (AR = {AR1, AR2, AR3, AR4}). ...
0
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1answer
140 views

How to calculate statistical significance of a difference between two groups?

I have two groups A and B. Each group involves some number of users. For example, let's imagine that the group A has 2000 unique users on Monday, while the group B has 2002 users on the same day. For ...
1
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0answers
14 views

Basic way to find out relationships and correlations / mediators

Currently I am looking for a very basic way to analyze relationships in a data set which contains nominal and ordinal data. Mainly I want to investigate, whether two groups, defined by a dichotomous ...
0
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1answer
2k views

Excel Regression - Training and Test Data

I am curious about the Excel regression function and evaluation of training and test data. Unlike using a program like R or Python where you state the values for your test and training data, Excel ...
0
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1answer
151 views

What is a good model to forecast a single variable?

Let's say I have the values of a variable x for a time period of 15 years. What is a good statistical model to find the values of this variable for the next 10 years? How good is excel's forecast ...
81
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8answers
12k views

Line of best fit does not look like a good fit. Why?

Have a look at this Excel graph: The 'common sense' line-of-best-fit would appear be an almost vertical line straight through the center of the points (edited by hand in red). However the linear ...
1
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1answer
27 views

Make value ranges to guess

Hi I have excel sheet with following like data of shoppers and money they used: ...
0
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2answers
1k views

How can I plot an ROC curve? [closed]

Given this simple data: How can I plot an ROC curve in Microsoft Excel? Step by step instructions would be very helpful. I know my TPR is ~87% and my FPR is ~13%. How do I know where to set the ...
1
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1answer
57 views

Office Desk Rota Assignment problem

This is not a home work and the question is not related to studies (I am not a student). I have to do the weekly desk rota at the office and thought this forum might help with suggestions. My problem ...
1
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0answers
47 views

Which statistical test should I use to compare land use type and species abundance?

I have abundance data for a species of bird and data on land use type in the areas where the bird data was collected. I want to test whether land use type affects bird abundance but I don't know what ...
3
votes
1answer
37 views

Analysis of a dataset including dichotomial, ordinal and % data

I'm working on a dataset which is giving me trouble. I have 200 samples (Sample 1, Sample 2...). An example dataset (limited to 15 samples) is here. My dataset is structured with the following ...
0
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1answer
146 views

Statistic problem to be resolved on Excel (or VBA) [closed]

I have a stat problem and I am not sure it can be resolved; I am not good in statistic but maybe someone can help me: I need to create two numbers: $v_1$ and $v_2$ with Excel or VBA. I want both ...
0
votes
1answer
59 views

Sample Size Estimation for Two Sample T-Test (Excel)

I'm trying to work out how to calculate the necessary sample size for a two sample t-test using excel and need some help. I don't think I am able to upload an excel attachment, so I will write out ...
0
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1answer
34 views

What type of distribution to use?

This is my first post here. I am making a financial model in excel of the feasibility of a project. Herefore I need to make some assumptions. One of those assumptions would be the fuel price and how ...
2
votes
1answer
846 views

Forecasting Monthly Timeseries Data in Excel

I am trying to create a forecast using a monthly timeseries data set of marketing expenses for a fictional company. The data looks something like this: Using linear regression to forecast future ...
2
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3answers
63 views

How to isolate price effect in time series?

Here is what I have: Excel Yearly energy prices by state from 2002 (generally increasing, generally peaked a couple of years ago) Yearly energy consumption by state by industry from 2008 (about 700 ...
0
votes
1answer
48 views

Calculating t-value for regression coefficients

I am estimating a nonlinear model as follows: $$Y=B_0+B_1X_1+B_2X_2+B_3aX_3^{1-b}+B_4$$ I have estimated $B_0$, $B_1$, $B_2$, $B_3$, $B_4$, $a$, and $b$ using least squares in Excel (minimizing SSR ...